64587139 has 2 divisors, whose sum is σ = 64587140. Its totient is φ = 64587138.

The previous prime is 64587119. The next prime is 64587181. The reversal of 64587139 is 93178546.

64587139 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 64587139 - 2⁷ = 64587011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64587095 and 64587104.

It is not a weakly prime, because it can be changed into another prime (64587119) 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, 32293569 + 32293570.

It is an arithmetic number, because the mean of its divisors is an integer number (32293570).

Almost surely, 2^64587139 is an apocalyptic number.

64587139 is a deficient number, since it is larger than the sum of its proper divisors (1).

64587139 is an equidigital number, since it uses as much as digits as its factorization.

64587139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 64587139 is about 8036.6124082228. The cubic root of 64587139 is about 401.2194846150.

The spelling of 64587139 in words is "sixty-four million, five hundred eighty-seven thousand, one hundred thirty-nine".