64425317 has 4 divisors (see below), whose sum is σ = 70282176. Its totient is φ = 58568460.

The previous prime is 64425307. The next prime is 64425331. The reversal of 64425317 is 71352446.

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 a cyclic number.

It is not a de Polignac number, because 64425317 - 2¹⁶ = 64359781 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 (64425307) 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, 2928413 + ... + 2928434.

It is an arithmetic number, because the mean of its divisors is an integer number (17570544).

Almost surely, 2^64425317 is an apocalyptic number.

It is an amenable number.

64425317 is a deficient number, since it is larger than the sum of its proper divisors (5856859).

64425317 is a wasteful number, since it uses less digits than its factorization.

64425317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5856858.

The product of its digits is 20160, while the sum is 32.

The square root of 64425317 is about 8026.5382949314. The cubic root of 64425317 is about 400.8841214666.

The spelling of 64425317 in words is "sixty-four million, four hundred twenty-five thousand, three hundred seventeen".