64402067 has 2 divisors, whose sum is σ = 64402068. Its totient is φ = 64402066.

The previous prime is 64402057. The next prime is 64402073. The reversal of 64402067 is 76020446.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64402067 is a prime.

It is not a weakly prime, because it can be changed into another prime (64402007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32201033 + 32201034.

It is an arithmetic number, because the mean of its divisors is an integer number (32201034).

Almost surely, 2^64402067 is an apocalyptic number.

64402067 is a deficient number, since it is larger than the sum of its proper divisors (1).

64402067 is an equidigital number, since it uses as much as digits as its factorization.

64402067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 64402067 is about 8025.0898437338. The cubic root of 64402067 is about 400.8358915797.

The spelling of 64402067 in words is "sixty-four million, four hundred two thousand, sixty-seven".