61616624 has 20 divisors (see below), whose sum is σ = 121923744. Its totient is φ = 30152448.

The previous prime is 61616587. The next prime is 61616629. The reversal of 61616624 is 42661616.

61616624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61616629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40217 + ... + 41720.

Almost surely, 2^61616624 is an apocalyptic number.

It is an amenable number.

61616624 is a deficient number, since it is larger than the sum of its proper divisors (60307120).

61616624 is a wasteful number, since it uses less digits than its factorization.

61616624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81992 (or 81986 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 61616624 is about 7849.6257235616. The cubic root of 61616624 is about 394.9716884050.

The spelling of 61616624 in words is "sixty-one million, six hundred sixteen thousand, six hundred twenty-four".