70809713 has 16 divisors (see below), whose sum is σ = 80633280. Its totient is φ = 61642944.

The previous prime is 70809703. The next prime is 70809721. The reversal of 70809713 is 31790807.

It is a cyclic number.

It is not a de Polignac number, because 70809713 - 2⁸ = 70809457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70809703) 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, 69395 + ... + 70407.

It is an arithmetic number, because the mean of its divisors is an integer number (5039580).

Almost surely, 2^70809713 is an apocalyptic number.

It is an amenable number.

70809713 is a deficient number, since it is larger than the sum of its proper divisors (9823567).

70809713 is a wasteful number, since it uses less digits than its factorization.

70809713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 70809713 is about 8414.8507413976. The cubic root of 70809713 is about 413.7115173088.

The spelling of 70809713 in words is "seventy million, eight hundred nine thousand, seven hundred thirteen".