64377131 has 12 divisors (see below), whose sum is σ = 80649072. Its totient is φ = 50935248.

The previous prime is 64377127. The next prime is 64377193. The reversal of 64377131 is 13177346.

It is not a de Polignac number, because 64377131 - 2² = 64377127 is a prime.

It is a super-2 number, since 2×64377131² = 8288829991582322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64377031) 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, 49895 + ... + 51168.

It is an arithmetic number, because the mean of its divisors is an integer number (6720756).

Almost surely, 2^64377131 is an apocalyptic number.

64377131 is a deficient number, since it is larger than the sum of its proper divisors (16271941).

64377131 is a wasteful number, since it uses less digits than its factorization.

64377131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101090 (or 101083 counting only the distinct ones).

The product of its digits is 10584, while the sum is 32.

The square root of 64377131 is about 8023.5360658503. The cubic root of 64377131 is about 400.7841513455.

The spelling of 64377131 in words is "sixty-four million, three hundred seventy-seven thousand, one hundred thirty-one".