639607153 has 2 divisors, whose sum is σ = 639607154. Its totient is φ = 639607152.

The previous prime is 639607139. The next prime is 639607181. The reversal of 639607153 is 351706936.

639607153 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 can be written as a sum of positive squares in only one way, i.e., 510398464 + 129208689 = 22592^2 + 11367^2 .

It is a cyclic number.

It is not a de Polignac number, because 639607153 - 2¹⁷ = 639476081 is a prime.

It is not a weakly prime, because it can be changed into another prime (639607103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319803576 + 319803577.

It is an arithmetic number, because the mean of its divisors is an integer number (319803577).

Almost surely, 2^639607153 is an apocalyptic number.

It is an amenable number.

639607153 is a deficient number, since it is larger than the sum of its proper divisors (1).

639607153 is an equidigital number, since it uses as much as digits as its factorization.

639607153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 639607153 is about 25290.4557689260. The cubic root of 639607153 is about 861.5975142552.

The spelling of 639607153 in words is "six hundred thirty-nine million, six hundred seven thousand, one hundred fifty-three".