61310864 has 10 divisors (see below), whose sum is σ = 118789830. Its totient is φ = 30655424.

The previous prime is 61310849. The next prime is 61310897. The reversal of 61310864 is 46801316.

61310864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32581264 + 28729600 = 5708^2 + 5360^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1915949 + ... + 1915980.

It is an arithmetic number, because the mean of its divisors is an integer number (11878983).

Almost surely, 2^61310864 is an apocalyptic number.

It is an amenable number.

61310864 is a deficient number, since it is larger than the sum of its proper divisors (57478966).

61310864 is a wasteful number, since it uses less digits than its factorization.

61310864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831937 (or 3831931 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 61310864 is about 7830.1254140659. The cubic root of 61310864 is about 394.3172824566.

The spelling of 61310864 in words is "sixty-one million, three hundred ten thousand, eight hundred sixty-four".