61357564 has 12 divisors (see below), whose sum is σ = 107997624. Its totient is φ = 30501104.

The previous prime is 61357559. The next prime is 61357577. The reversal of 61357564 is 46575316.

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, 43642 + ... + 45025.

It is an arithmetic number, because the mean of its divisors is an integer number (8999802).

Almost surely, 2^61357564 is an apocalyptic number.

It is an amenable number.

61357564 is a deficient number, since it is larger than the sum of its proper divisors (46640060).

61357564 is a wasteful number, since it uses less digits than its factorization.

61357564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88844 (or 88842 counting only the distinct ones).

The product of its digits is 75600, while the sum is 37.

The square root of 61357564 is about 7833.1069187137. The cubic root of 61357564 is about 394.4173731662.

The spelling of 61357564 in words is "sixty-one million, three hundred fifty-seven thousand, five hundred sixty-four".