70808013 has 24 divisors (see below), whose sum is σ = 106646176. Its totient is φ = 46947600.

The previous prime is 70808011. The next prime is 70808021. The reversal of 70808013 is 31080807.

It is not a de Polignac number, because 70808013 - 2¹ = 70808011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70808011) 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 23 ways as a sum of consecutive naturals, for example, 50583 + ... + 51963.

Almost surely, 2^70808013 is an apocalyptic number.

It is an amenable number.

70808013 is a deficient number, since it is larger than the sum of its proper divisors (35838163).

70808013 is a wasteful number, since it uses less digits than its factorization.

70808013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 70808013 is about 8414.7497288987. The cubic root of 70808013 is about 413.7082064861.

The spelling of 70808013 in words is "seventy million, eight hundred eight thousand, thirteen".