64279131 has 12 divisors (see below), whose sum is σ = 99698472. Its totient is φ = 36730848.

The previous prime is 64279123. The next prime is 64279133. The reversal of 64279131 is 13197246.

It is not a de Polignac number, because 64279131 - 2³ = 64279123 is a prime.

It is a super-2 number, since 2×64279131² = 8263613364230322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64279092 and 64279101.

It is not an unprimeable number, because it can be changed into a prime (64279133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218490 + ... + 218783.

It is an arithmetic number, because the mean of its divisors is an integer number (8308206).

Almost surely, 2^64279131 is an apocalyptic number.

64279131 is a deficient number, since it is larger than the sum of its proper divisors (35419341).

64279131 is a wasteful number, since it uses less digits than its factorization.

64279131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437290 (or 437283 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 64279131 is about 8017.4267068680. The cubic root of 64279131 is about 400.5806795369.

The spelling of 64279131 in words is "sixty-four million, two hundred seventy-nine thousand, one hundred thirty-one".