64069831 has 8 divisors (see below), whose sum is σ = 73758240. Its totient is φ = 54515328.

The previous prime is 64069799. The next prime is 64069861. The reversal of 64069831 is 13896046.

64069831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 64069831 - 2⁵ = 64069799 is a prime.

It is a super-2 number, since 2×64069831² = 8209886488737122, 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 (64069861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32446 + ... + 34363.

It is an arithmetic number, because the mean of its divisors is an integer number (9219780).

Almost surely, 2^64069831 is an apocalyptic number.

64069831 is a deficient number, since it is larger than the sum of its proper divisors (9688409).

64069831 is a wasteful number, since it uses less digits than its factorization.

64069831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66953.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 64069831 is about 8004.3632476294. The cubic root of 64069831 is about 400.1454283701.

The spelling of 64069831 in words is "sixty-four million, sixty-nine thousand, eight hundred thirty-one".