690022668 has 18 divisors (see below), whose sum is σ = 1610265244. Its totient is φ = 229977224.

The previous prime is 690022649. The next prime is 690022679. The reversal of 690022668 is 866220096.

It is a super-3 number, since 3×690022668³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 5 ways as a sum of consecutive naturals, for example, 87205 + ... + 94787.

Almost surely, 2^690022668 is an apocalyptic number.

It is an amenable number.

690022668 is an abundant number, since it is smaller than the sum of its proper divisors (920242576).

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

690022668 is an frugal number, since it uses more digits than its factorization.

690022668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15173 (or 7588 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 690022668 is about 26268.2825475896. The cubic root of 690022668 is about 883.6652688035.

Multiplying 690022668 by its product of nonzero digits (62208), we get a square (42924930130944 = 6551712²).

The spelling of 690022668 in words is "six hundred ninety million, twenty-two thousand, six hundred sixty-eight".