61310664 has 24 divisors (see below), whose sum is σ = 166049910. Its totient is φ = 20436864.

The previous prime is 61310629. The next prime is 61310671. The reversal of 61310664 is 46601316.

61310664 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., 61308900 + 1764 = 7830^2 + 42^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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 in 5 ways as a sum of consecutive naturals, for example, 425697 + ... + 425840.

Almost surely, 2^61310664 is an apocalyptic number.

It is an amenable number.

61310664 is an abundant number, since it is smaller than the sum of its proper divisors (104739246).

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

61310664 is a wasteful number, since it uses less digits than its factorization.

61310664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851549 (or 851542 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 61310664 is about 7830.1126428679. The cubic root of 61310664 is about 394.3168536933.

The spelling of 61310664 in words is "sixty-one million, three hundred ten thousand, six hundred sixty-four".