1611612 has 36 divisors (see below), whose sum is σ = 4127760. Its totient is φ = 530112.

The previous prime is 1611607. The next prime is 1611613. The reversal of 1611612 is 2161161.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2953 + ... + 3455.

It is an arithmetic number, because the mean of its divisors is an integer number (114660).

2^1611612 is an apocalyptic number.

1611612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1611612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2063880).

1611612 is an abundant number, since it is smaller than the sum of its proper divisors (2516148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1611612 is a wasteful number, since it uses less digits than its factorization.

1611612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 597 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1611612 is about 1269.4928121104. The cubic root of 1611612 is about 117.2429752278.

Adding to 1611612 its reverse (2161161), we get a palindrome (3772773).

It can be divided in two parts, 16 and 11612, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 1611612 in words is "one million, six hundred eleven thousand, six hundred twelve".