807106666 has 16 divisors (see below), whose sum is σ = 1233468000. Its totient is φ = 395976208.

The previous prime is 807106649. The next prime is 807106667. The reversal of 807106666 is 666601708.

It is not an unprimeable number, because it can be changed into a prime (807106667) 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, 60360 + ... + 72508.

It is an arithmetic number, because the mean of its divisors is an integer number (77091750).

Almost surely, 2^807106666 is an apocalyptic number.

807106666 is a deficient number, since it is larger than the sum of its proper divisors (426361334).

807106666 is a wasteful number, since it uses less digits than its factorization.

807106666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12773.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 807106666 is about 28409.6227711668. The cubic root of 807106666 is about 931.0585187979.

The spelling of 807106666 in words is "eight hundred seven million, one hundred six thousand, six hundred sixty-six".