64717516 has 12 divisors (see below), whose sum is σ = 116018280. Its totient is φ = 31569440.

The previous prime is 64717481. The next prime is 64717517. The reversal of 64717516 is 61571746.

It is not an unprimeable number, because it can be changed into a prime (64717517) 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, 197146 + ... + 197473.

It is an arithmetic number, because the mean of its divisors is an integer number (9668190).

Almost surely, 2^64717516 is an apocalyptic number.

It is an amenable number.

64717516 is a deficient number, since it is larger than the sum of its proper divisors (51300764).

64717516 is a wasteful number, since it uses less digits than its factorization.

64717516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394664 (or 394662 counting only the distinct ones).

The product of its digits is 35280, while the sum is 37.

The square root of 64717516 is about 8044.7197589475. The cubic root of 64717516 is about 401.4892732813.

The spelling of 64717516 in words is "sixty-four million, seven hundred seventeen thousand, five hundred sixteen".