70691718 has 64 divisors (see below), whose sum is σ = 152285184. Its totient is φ = 21840000.

The previous prime is 70691717. The next prime is 70691737. The reversal of 70691718 is 81719607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70691717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 699868 + ... + 699968.

It is an arithmetic number, because the mean of its divisors is an integer number (2379456).

Almost surely, 2^70691718 is an apocalyptic number.

70691718 is an abundant number, since it is smaller than the sum of its proper divisors (81593466).

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

70691718 is a wasteful number, since it uses less digits than its factorization.

70691718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 70691718 is about 8407.8367015541. The cubic root of 70691718 is about 413.4815910806.

The spelling of 70691718 in words is "seventy million, six hundred ninety-one thousand, seven hundred eighteen".