64468831 has 4 divisors (see below), whose sum is σ = 73678672. Its totient is φ = 55258992.

The previous prime is 64468801. The next prime is 64468849. The reversal of 64468831 is 13886446.

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 64468831 - 2¹⁷ = 64337759 is a prime.

It is a super-2 number, since 2×64468831² = 8312460341013122, 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 (64468801) 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, 4604910 + ... + 4604923.

It is an arithmetic number, because the mean of its divisors is an integer number (18419668).

Almost surely, 2^64468831 is an apocalyptic number.

64468831 is a deficient number, since it is larger than the sum of its proper divisors (9209841).

64468831 is an equidigital number, since it uses as much as digits as its factorization.

64468831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9209840.

The product of its digits is 110592, while the sum is 40.

The square root of 64468831 is about 8029.2484704361. The cubic root of 64468831 is about 400.9743558993.

The spelling of 64468831 in words is "sixty-four million, four hundred sixty-eight thousand, eight hundred thirty-one".