61615328 has 24 divisors (see below), whose sum is σ = 127690920. Its totient is φ = 29185920.

The previous prime is 61615313. The next prime is 61615331. The reversal of 61615328 is 82351616.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 61615294 and 61615303.

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, 50063 + ... + 51278.

It is an arithmetic number, because the mean of its divisors is an integer number (5320455).

Almost surely, 2^61615328 is an apocalyptic number.

It is an amenable number.

61615328 is an abundant number, since it is smaller than the sum of its proper divisors (66075592).

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

61615328 is a wasteful number, since it uses less digits than its factorization.

61615328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101370 (or 101362 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 61615328 is about 7849.5431714209. The cubic root of 61615328 is about 394.9689192016.

The spelling of 61615328 in words is "sixty-one million, six hundred fifteen thousand, three hundred twenty-eight".