64782317 has 16 divisors (see below), whose sum is σ = 69050880. Its totient is φ = 60681600.

The previous prime is 64782313. The next prime is 64782353. The reversal of 64782317 is 71328746.

It is a cyclic number.

It is not a de Polignac number, because 64782317 - 2² = 64782313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64782313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150092 + ... + 150522.

It is an arithmetic number, because the mean of its divisors is an integer number (4315680).

Almost surely, 2^64782317 is an apocalyptic number.

It is an amenable number.

64782317 is a deficient number, since it is larger than the sum of its proper divisors (4268563).

64782317 is a wasteful number, since it uses less digits than its factorization.

64782317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604.

The product of its digits is 56448, while the sum is 38.

The square root of 64782317 is about 8048.7462998904. The cubic root of 64782317 is about 401.6232309759.

The spelling of 64782317 in words is "sixty-four million, seven hundred eighty-two thousand, three hundred seventeen".