810478690 has 16 divisors (see below), whose sum is σ = 1667270592. Its totient is φ = 277878384.

The previous prime is 810478679. The next prime is 810478717. The reversal of 810478690 is 96874018.

It is a super-2 number, since 2×810478690² = 1313751413888232200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5789064 + ... + 5789203.

It is an arithmetic number, because the mean of its divisors is an integer number (104204412).

Almost surely, 2^810478690 is an apocalyptic number.

810478690 is an abundant number, since it is smaller than the sum of its proper divisors (856791902).

810478690 is a wasteful number, since it uses less digits than its factorization.

810478690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11578281.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 810478690 is about 28468.9074254703. The cubic root of 810478690 is about 932.3533453934.

The spelling of 810478690 in words is "eight hundred ten million, four hundred seventy-eight thousand, six hundred ninety".