64625567 has 2 divisors, whose sum is σ = 64625568. Its totient is φ = 64625566.

The previous prime is 64625563. The next prime is 64625573. The reversal of 64625567 is 76552646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64625567 - 2² = 64625563 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64625563) 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, 32312783 + 32312784.

It is an arithmetic number, because the mean of its divisors is an integer number (32312784).

Almost surely, 2^64625567 is an apocalyptic number.

64625567 is a deficient number, since it is larger than the sum of its proper divisors (1).

64625567 is an equidigital number, since it uses as much as digits as its factorization.

64625567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 41.

The square root of 64625567 is about 8039.0028610519. The cubic root of 64625567 is about 401.2990412460.

The spelling of 64625567 in words is "sixty-four million, six hundred twenty-five thousand, five hundred sixty-seven".