64765317 has 4 divisors (see below), whose sum is σ = 86353760. Its totient is φ = 43176876.

The previous prime is 64765313. The next prime is 64765321. The reversal of 64765317 is 71356746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (64765313) and next prime (64765321).

It is not a de Polignac number, because 64765317 - 2² = 64765313 is a prime.

It is a super-2 number, since 2×64765317² = 8389092572220978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64765313) 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, 10794217 + ... + 10794222.

It is an arithmetic number, because the mean of its divisors is an integer number (21588440).

Almost surely, 2^64765317 is an apocalyptic number.

It is an amenable number.

64765317 is a deficient number, since it is larger than the sum of its proper divisors (21588443).

64765317 is a wasteful number, since it uses less digits than its factorization.

64765317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21588442.

The product of its digits is 105840, while the sum is 39.

The square root of 64765317 is about 8047.6901655071. The cubic root of 64765317 is about 401.5880969426.

The spelling of 64765317 in words is "sixty-four million, seven hundred sixty-five thousand, three hundred seventeen".