1601610 has 32 divisors (see below), whose sum is σ = 3877632. Its totient is φ = 423360.

The previous prime is 1601609. The next prime is 1601617. The reversal of 1601610 is 161061.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1601610.

It is not an unprimeable number, because it can be changed into a prime (1601617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5775 + ... + 6045.

It is an arithmetic number, because the mean of its divisors is an integer number (121176).

2^1601610 is an apocalyptic number.

1601610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1601610 is an abundant number, since it is smaller than the sum of its proper divisors (2276022).

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

1601610 is a wasteful number, since it uses less digits than its factorization.

1601610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1601610 is about 1265.5473124305. The cubic root of 1601610 is about 116.9999269486. Note that the first 4 decimals are identical.

Adding to 1601610 its reverse (161061), we get a palindrome (1762671).

It can be divided in two parts, 1601 and 610, that added together give a triangular number (2211 = T₆₆).

The spelling of 1601610 in words is "one million, six hundred one thousand, six hundred ten".