70904391 has 16 divisors (see below), whose sum is σ = 98709600. Its totient is φ = 45214848.

The previous prime is 70904329. The next prime is 70904401. The reversal of 70904391 is 19340907.

It is not a de Polignac number, because 70904391 - 2⁹ = 70903879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70904311) 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, 5745 + ... + 13221.

It is an arithmetic number, because the mean of its divisors is an integer number (6169350).

Almost surely, 2^70904391 is an apocalyptic number.

70904391 is a deficient number, since it is larger than the sum of its proper divisors (27805209).

70904391 is a wasteful number, since it uses less digits than its factorization.

70904391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7618.

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

The square root of 70904391 is about 8420.4745115700. The cubic root of 70904391 is about 413.8958231657.

The spelling of 70904391 in words is "seventy million, nine hundred four thousand, three hundred ninety-one".