64312367 has 4 divisors (see below), whose sum is σ = 73499856. Its totient is φ = 55124880.

The previous prime is 64312357. The next prime is 64312421. The reversal of 64312367 is 76321346.

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 64312367 - 2²² = 60118063 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 (64312357) 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, 4593734 + ... + 4593747.

It is an arithmetic number, because the mean of its divisors is an integer number (18374964).

Almost surely, 2^64312367 is an apocalyptic number.

64312367 is a deficient number, since it is larger than the sum of its proper divisors (9187489).

64312367 is an equidigital number, since it uses as much as digits as its factorization.

64312367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9187488.

The product of its digits is 18144, while the sum is 32.

The square root of 64312367 is about 8019.4991738886. The cubic root of 64312367 is about 400.6497087085.

The spelling of 64312367 in words is "sixty-four million, three hundred twelve thousand, three hundred sixty-seven".