64955939 has 2 divisors, whose sum is σ = 64955940. Its totient is φ = 64955938.

The previous prime is 64955923. The next prime is 64955959. The reversal of 64955939 is 93955946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64955939 - 2⁴ = 64955923 is a prime.

It is a super-2 number, since 2×64955939² = 8438548022743442, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64955959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32477969 + 32477970.

It is an arithmetic number, because the mean of its divisors is an integer number (32477970).

Almost surely, 2^64955939 is an apocalyptic number.

64955939 is a deficient number, since it is larger than the sum of its proper divisors (1).

64955939 is an equidigital number, since it uses as much as digits as its factorization.

64955939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1312200, while the sum is 50.

The square root of 64955939 is about 8059.5247378490. The cubic root of 64955939 is about 401.9817054784.

The spelling of 64955939 in words is "sixty-four million, nine hundred fifty-five thousand, nine hundred thirty-nine".