70139760 has 40 divisors (see below), whose sum is σ = 217434000. Its totient is φ = 18703872.

The previous prime is 70139759. The next prime is 70139779. The reversal of 70139760 is 6793107.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145885 + ... + 146364.

It is an arithmetic number, because the mean of its divisors is an integer number (5435850).

Almost surely, 2^70139760 is an apocalyptic number.

It is an amenable number.

70139760 is an abundant number, since it is smaller than the sum of its proper divisors (147294240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70139760 is a wasteful number, since it uses less digits than its factorization.

70139760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292265 (or 292259 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 70139760 is about 8374.9483580497. The cubic root of 70139760 is about 412.4026289916.

The spelling of 70139760 in words is "seventy million, one hundred thirty-nine thousand, seven hundred sixty".