64427807 has 16 divisors (see below), whose sum is σ = 72550080. Its totient is φ = 56888832.

The previous prime is 64427791. The next prime is 64427819. The reversal of 64427807 is 70872446.

It is a cyclic number.

It is not a de Polignac number, because 64427807 - 2⁴ = 64427791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64427887) 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 in 15 ways as a sum of consecutive naturals, for example, 19169 + ... + 22277.

It is an arithmetic number, because the mean of its divisors is an integer number (4534380).

Almost surely, 2^64427807 is an apocalyptic number.

64427807 is a deficient number, since it is larger than the sum of its proper divisors (8122273).

64427807 is a wasteful number, since it uses less digits than its factorization.

64427807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 64427807 is about 8026.6934038868. The cubic root of 64427807 is about 400.8892860440.

The spelling of 64427807 in words is "sixty-four million, four hundred twenty-seven thousand, eight hundred seven".