64813907 has 8 divisors (see below), whose sum is σ = 67008480. Its totient is φ = 62648640.

The previous prime is 64813897. The next prime is 64813913. The reversal of 64813907 is 70931846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64813907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64813937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2783 + ... + 11720.

It is an arithmetic number, because the mean of its divisors is an integer number (8376060).

Almost surely, 2^64813907 is an apocalyptic number.

64813907 is a deficient number, since it is larger than the sum of its proper divisors (2194573).

64813907 is a wasteful number, since it uses less digits than its factorization.

64813907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14653.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 64813907 is about 8050.7084781403. The cubic root of 64813907 is about 401.6885019571.

The spelling of 64813907 in words is "sixty-four million, eight hundred thirteen thousand, nine hundred seven".