64971207 has 24 divisors (see below), whose sum is σ = 111970800. Its totient is φ = 37125648.

The previous prime is 64971197. The next prime is 64971209. The reversal of 64971207 is 70217946.

It is a happy number.

64971207 is a `hidden beast` number, since 649 + 7 + 1 + 2 + 0 + 7 = 666.

It is not a de Polignac number, because 64971207 - 2⁶ = 64971143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64971209) 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 23 ways as a sum of consecutive naturals, for example, 23232 + ... + 25877.

It is an arithmetic number, because the mean of its divisors is an integer number (4665450).

Almost surely, 2^64971207 is an apocalyptic number.

64971207 is a deficient number, since it is larger than the sum of its proper divisors (46999593).

64971207 is a wasteful number, since it uses less digits than its factorization.

64971207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49132 (or 49119 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 64971207 is about 8060.4718844494. The cubic root of 64971207 is about 402.0131984974.

The spelling of 64971207 in words is "sixty-four million, nine hundred seventy-one thousand, two hundred seven".