64311607 has 4 divisors (see below), whose sum is σ = 64357920. Its totient is φ = 64265296.

The previous prime is 64311581. The next prime is 64311659. The reversal of 64311607 is 70611346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64311607 - 2⁷ = 64311479 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 (64311007) 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, 21007 + ... + 23872.

It is an arithmetic number, because the mean of its divisors is an integer number (16089480).

Almost surely, 2^64311607 is an apocalyptic number.

64311607 is a deficient number, since it is larger than the sum of its proper divisors (46313).

64311607 is a wasteful number, since it uses less digits than its factorization.

64311607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46312.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 64311607 is about 8019.4517892435. The cubic root of 64311607 is about 400.6481304999.

The spelling of 64311607 in words is "sixty-four million, three hundred eleven thousand, six hundred seven".