64039951 has 2 divisors, whose sum is σ = 64039952. Its totient is φ = 64039950.

The previous prime is 64039931. The next prime is 64039979. The reversal of 64039951 is 15993046.

64039951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64039951 - 2⁵ = 64039919 is a prime.

It is a super-2 number, since 2×64039951² = 8202230648164802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64039951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64039931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32019975 + 32019976.

It is an arithmetic number, because the mean of its divisors is an integer number (32019976).

Almost surely, 2^64039951 is an apocalyptic number.

64039951 is a deficient number, since it is larger than the sum of its proper divisors (1).

64039951 is an equidigital number, since it uses as much as digits as its factorization.

64039951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 64039951 is about 8002.4965479530. The cubic root of 64039951 is about 400.0832139374.

The spelling of 64039951 in words is "sixty-four million, thirty-nine thousand, nine hundred fifty-one".