690933768 has 32 divisors (see below), whose sum is σ = 1974096960. Its totient is φ = 197409600.

The previous prime is 690933743. The next prime is 690933781. The reversal of 690933768 is 867339096.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 690933768.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2056183 + ... + 2056518.

It is an arithmetic number, because the mean of its divisors is an integer number (61690530).

Almost surely, 2^690933768 is an apocalyptic number.

It is an amenable number.

690933768 is an abundant number, since it is smaller than the sum of its proper divisors (1283163192).

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

690933768 is a wasteful number, since it uses less digits than its factorization.

690933768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112717 (or 4112713 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 690933768 is about 26285.6190339889. The cubic root of 690933768 is about 884.0540257584.

The spelling of 690933768 in words is "six hundred ninety million, nine hundred thirty-three thousand, seven hundred sixty-eight".