61610516 has 48 divisors (see below), whose sum is σ = 128604672. Its totient is φ = 25497600.

The previous prime is 61610501. The next prime is 61610543. The reversal of 61610516 is 61501616.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 21860 + ... + 24516.

It is an arithmetic number, because the mean of its divisors is an integer number (2679264).

Almost surely, 2^61610516 is an apocalyptic number.

It is an amenable number.

61610516 is an abundant number, since it is smaller than the sum of its proper divisors (66994156).

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

61610516 is a wasteful number, since it uses less digits than its factorization.

61610516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720 (or 2718 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 61610516 is about 7849.2366507833. The cubic root of 61610516 is about 394.9586369121.

Subtracting from 61610516 its reverse (61501616), we obtain a square (108900 = 330²).

It can be divided in two parts, 61610 and 516, that added together give a palindrome (62126).

The spelling of 61610516 in words is "sixty-one million, six hundred ten thousand, five hundred sixteen".