813700007 has 4 divisors (see below), whose sum is σ = 814363320. Its totient is φ = 813036696.

The previous prime is 813699989. The next prime is 813700021. The reversal of 813700007 is 700007318.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 813700007 - 2²⁰ = 812651431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813700037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329813 + ... + 332270.

It is an arithmetic number, because the mean of its divisors is an integer number (203590830).

Almost surely, 2^813700007 is an apocalyptic number.

813700007 is a deficient number, since it is larger than the sum of its proper divisors (663313).

813700007 is a wasteful number, since it uses less digits than its factorization.

813700007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663312.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 813700007 is about 28525.4273762901. The cubic root of 813700007 is about 933.5869518961.

The spelling of 813700007 in words is "eight hundred thirteen million, seven hundred thousand, seven".