64580971 has 12 divisors (see below), whose sum is σ = 80904432. Its totient is φ = 51096528.

The previous prime is 64580959. The next prime is 64580993. The reversal of 64580971 is 17908546.

It is not a de Polignac number, because 64580971 - 2⁵ = 64580939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64580911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50055 + ... + 51328.

It is an arithmetic number, because the mean of its divisors is an integer number (6742036).

Almost surely, 2^64580971 is an apocalyptic number.

64580971 is a deficient number, since it is larger than the sum of its proper divisors (16323461).

64580971 is a wasteful number, since it uses less digits than its factorization.

64580971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101410 (or 101403 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 64580971 is about 8036.2286552835. The cubic root of 64580971 is about 401.2067122034.

The spelling of 64580971 in words is "sixty-four million, five hundred eighty thousand, nine hundred seventy-one".