61556016 has 20 divisors (see below), whose sum is σ = 159019832. Its totient is φ = 20518656.

The previous prime is 61555973. The next prime is 61556021. The reversal of 61556016 is 61065516.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641161 + ... + 641256.

Almost surely, 2^61556016 is an apocalyptic number.

It is an amenable number.

61556016 is an abundant number, since it is smaller than the sum of its proper divisors (97463816).

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

61556016 is a wasteful number, since it uses less digits than its factorization.

61556016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282428 (or 1282422 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 61556016 is about 7845.7642075199. The cubic root of 61556016 is about 394.8421438347.

The spelling of 61556016 in words is "sixty-one million, five hundred fifty-six thousand, sixteen".