64970911 has 2 divisors, whose sum is σ = 64970912. Its totient is φ = 64970910.

The previous prime is 64970903. The next prime is 64970953. The reversal of 64970911 is 11907946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64970911 - 2³ = 64970903 is a prime.

It is equal to p_3838924 and since 64970911 and 3838924 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64970011) 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 as a sum of consecutive naturals, namely, 32485455 + 32485456.

It is an arithmetic number, because the mean of its divisors is an integer number (32485456).

Almost surely, 2^64970911 is an apocalyptic number.

64970911 is a deficient number, since it is larger than the sum of its proper divisors (1).

64970911 is an equidigital number, since it uses as much as digits as its factorization.

64970911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 64970911 is about 8060.4535232206. The cubic root of 64970911 is about 402.0125879906.

The spelling of 64970911 in words is "sixty-four million, nine hundred seventy thousand, nine hundred eleven".