813405207 has 8 divisors (see below), whose sum is σ = 1084700800. Its totient is φ = 542189880.

The previous prime is 813405193. The next prime is 813405209. The reversal of 813405207 is 702504318.

813405207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 813405207 - 2⁸ = 813404951 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 (813405209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10032 + ... + 41562.

It is an arithmetic number, because the mean of its divisors is an integer number (135587600).

Almost surely, 2^813405207 is an apocalyptic number.

813405207 is a deficient number, since it is larger than the sum of its proper divisors (271295593).

813405207 is a wasteful number, since it uses less digits than its factorization.

813405207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40133.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 813405207 is about 28520.2595885802. The cubic root of 813405207 is about 933.4741934368.

The spelling of 813405207 in words is "eight hundred thirteen million, four hundred five thousand, two hundred seven".