65140564 has 12 divisors (see below), whose sum is σ = 114194304. Its totient is φ = 32513624.

The previous prime is 65140561. The next prime is 65140573. The reversal of 65140564 is 46504156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65140561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11524 + ... + 16219.

It is an arithmetic number, because the mean of its divisors is an integer number (9516192).

Almost surely, 2^65140564 is an apocalyptic number.

It is an amenable number.

65140564 is a deficient number, since it is larger than the sum of its proper divisors (49053740).

65140564 is a wasteful number, since it uses less digits than its factorization.

65140564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28334 (or 28332 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 65140564 is about 8070.9704497043. The cubic root of 65140564 is about 402.3621975959.

The spelling of 65140564 in words is "sixty-five million, one hundred forty thousand, five hundred sixty-four".