70813823 has 16 divisors (see below), whose sum is σ = 76432896. Its totient is φ = 65372160.

The previous prime is 70813811. The next prime is 70813837. The reversal of 70813823 is 32831807.

It is a cyclic number.

It is not a de Polignac number, because 70813823 - 2⁴ = 70813807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70813823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70819823) 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 15 ways as a sum of consecutive naturals, for example, 366815 + ... + 367007.

It is an arithmetic number, because the mean of its divisors is an integer number (4777056).

Almost surely, 2^70813823 is an apocalyptic number.

70813823 is a deficient number, since it is larger than the sum of its proper divisors (5619073).

70813823 is a wasteful number, since it uses less digits than its factorization.

70813823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 70813823 is about 8415.0949489593. The cubic root of 70813823 is about 413.7195214905.

The spelling of 70813823 in words is "seventy million, eight hundred thirteen thousand, eight hundred twenty-three".