1613612 has 72 divisors (see below), whose sum is σ = 3935232. Its totient is φ = 561600.

The previous prime is 1613609. The next prime is 1613621. The reversal of 1613612 is 2163161.

It is a zygodrome in base 13.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 52037 + ... + 52067.

It is an arithmetic number, because the mean of its divisors is an integer number (54656).

2^1613612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1613612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1967616).

1613612 is an abundant number, since it is smaller than the sum of its proper divisors (2321620).

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

1613612 is a wasteful number, since it uses less digits than its factorization.

1613612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 64 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 1613612 is about 1270.2802840318. The cubic root of 1613612 is about 117.2914544356.

Adding to 1613612 its reverse (2163161), we get a palindrome (3776773).

It can be divided in two parts, 161 and 3612, that added together give a palindrome (3773).

The spelling of 1613612 in words is "one million, six hundred thirteen thousand, six hundred twelve".