70425639 has 16 divisors (see below), whose sum is σ = 104682240. Its totient is φ = 46793880.

The previous prime is 70425631. The next prime is 70425653. The reversal of 70425639 is 93652407.

It is not a de Polignac number, because 70425639 - 2³ = 70425631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70425631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4204 + ... + 12590.

It is an arithmetic number, because the mean of its divisors is an integer number (6542640).

Almost surely, 2^70425639 is an apocalyptic number.

70425639 is a deficient number, since it is larger than the sum of its proper divisors (34256601).

70425639 is a wasteful number, since it uses less digits than its factorization.

70425639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8707 (or 8701 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 70425639 is about 8391.9985104860. The cubic root of 70425639 is about 412.9621662916.

The spelling of 70425639 in words is "seventy million, four hundred twenty-five thousand, six hundred thirty-nine".