64402427 has 2 divisors, whose sum is σ = 64402428. Its totient is φ = 64402426.

The previous prime is 64402421. The next prime is 64402463. The reversal of 64402427 is 72420446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64402427 - 2⁴ = 64402411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64402427.

It is not a weakly prime, because it can be changed into another prime (64402421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32201213 + 32201214.

It is an arithmetic number, because the mean of its divisors is an integer number (32201214).

Almost surely, 2^64402427 is an apocalyptic number.

64402427 is a deficient number, since it is larger than the sum of its proper divisors (1).

64402427 is an equidigital number, since it uses as much as digits as its factorization.

64402427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 64402427 is about 8025.1122733579. The cubic root of 64402427 is about 400.8366384535.

The spelling of 64402427 in words is "sixty-four million, four hundred two thousand, four hundred twenty-seven".