639068259607 has 8 divisors (see below), whose sum is σ = 654013362816. Its totient is φ = 624126931512.

The previous prime is 639068259497. The next prime is 639068259637. The reversal of 639068259607 is 706952860936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-639068259607 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 (639068259637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599803 + ... + 1279804.

It is an arithmetic number, because the mean of its divisors is an integer number (81751670352).

Almost surely, 2^639068259607 is an apocalyptic number.

639068259607 is a deficient number, since it is larger than the sum of its proper divisors (14945103209).

639068259607 is a wasteful number, since it uses less digits than its factorization.

639068259607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887557.

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 639068259607 in words is "six hundred thirty-nine billion, sixty-eight million, two hundred fifty-nine thousand, six hundred seven".