64573516 has 12 divisors (see below), whose sum is σ = 129147088. Its totient is φ = 27674352.

The previous prime is 64573513. The next prime is 64573541. The reversal of 64573516 is 61537546.

64573516 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (64573513) 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, 1153071 + ... + 1153126.

Almost surely, 2^64573516 is an apocalyptic number.

It is an amenable number.

64573516 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64573516 is a wasteful number, since it uses less digits than its factorization.

64573516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306208 (or 2306206 counting only the distinct ones).

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

The square root of 64573516 is about 8035.7648049206. The cubic root of 64573516 is about 401.1912736457.

The spelling of 64573516 in words is "sixty-four million, five hundred seventy-three thousand, five hundred sixteen".