70707813 has 16 divisors (see below), whose sum is σ = 103251456. Its totient is φ = 42685040.

The previous prime is 70707809. The next prime is 70707823. The reversal of 70707813 is 31870707.

It is a cyclic number.

It is not a de Polignac number, because 70707813 - 2² = 70707809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70707803) 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, 4606 + ... + 12752.

It is an arithmetic number, because the mean of its divisors is an integer number (6453216).

Almost surely, 2^70707813 is an apocalyptic number.

It is an amenable number.

70707813 is a deficient number, since it is larger than the sum of its proper divisors (32543643).

70707813 is a wasteful number, since it uses less digits than its factorization.

70707813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424.

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 70707813 is about 8408.7937898369. The cubic root of 70707813 is about 413.5129690194.

The spelling of 70707813 in words is "seventy million, seven hundred seven thousand, eight hundred thirteen".