690341994 has 16 divisors (see below), whose sum is σ = 1534093440. Its totient is φ = 230113980.

The previous prime is 690341989. The next prime is 690342011. The reversal of 690341994 is 499143096.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6392002 + ... + 6392109.

It is an arithmetic number, because the mean of its divisors is an integer number (95880840).

Almost surely, 2^690341994 is an apocalyptic number.

690341994 is an abundant number, since it is smaller than the sum of its proper divisors (843751446).

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

690341994 is a wasteful number, since it uses less digits than its factorization.

690341994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12784122 (or 12784116 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 690341994 is about 26274.3600112353. The cubic root of 690341994 is about 883.8015608373.

The spelling of 690341994 in words is "six hundred ninety million, three hundred forty-one thousand, nine hundred ninety-four".