65515564 has 6 divisors (see below), whose sum is σ = 114652244. Its totient is φ = 32757780.

The previous prime is 65515561. The next prime is 65515573. The reversal of 65515564 is 46551556.

It is not an unprimeable number, because it can be changed into a prime (65515561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8189442 + ... + 8189449.

Almost surely, 2^65515564 is an apocalyptic number.

It is an amenable number.

65515564 is a deficient number, since it is larger than the sum of its proper divisors (49136680).

65515564 is a wasteful number, since it uses less digits than its factorization.

65515564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16378895 (or 16378893 counting only the distinct ones).

The product of its digits is 90000, while the sum is 37.

The square root of 65515564 is about 8094.1685181370. The cubic root of 65515564 is about 403.1328244700.

The spelling of 65515564 in words is "sixty-five million, five hundred fifteen thousand, five hundred sixty-four".