70391616 has 56 divisors (see below), whose sum is σ = 186866784. Its totient is φ = 23385600.

The previous prime is 70391609. The next prime is 70391617. The reversal of 70391616 is 61619307.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70391617) 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, 100066 + ... + 100766.

Almost surely, 2^70391616 is an apocalyptic number.

It is an amenable number.

70391616 is an abundant number, since it is smaller than the sum of its proper divisors (116475168).

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

70391616 is a wasteful number, since it uses less digits than its factorization.

70391616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 70391616 is about 8389.9711560887. The cubic root of 70391616 is about 412.8956541748.

The spelling of 70391616 in words is "seventy million, three hundred ninety-one thousand, six hundred sixteen".