890764866 has 96 divisors (see below), whose sum is σ = 2037372480. Its totient is φ = 281014272.

The previous prime is 890764843. The next prime is 890764873. The reversal of 890764866 is 668467098.

890764866 is a `hidden beast` number, since 8 + 90 + 76 + 486 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4615266 + ... + 4615458.

It is an arithmetic number, because the mean of its divisors is an integer number (21222630).

Almost surely, 2^890764866 is an apocalyptic number.

890764866 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

890764866 is an abundant number, since it is smaller than the sum of its proper divisors (1146607614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

890764866 is a wasteful number, since it uses less digits than its factorization.

890764866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 890764866 is about 29845.6842106191. The cubic root of 890764866 is about 962.1756450446.

The spelling of 890764866 in words is "eight hundred ninety million, seven hundred sixty-four thousand, eight hundred sixty-six".