668607022 has 4 divisors (see below), whose sum is σ = 1002910536. Its totient is φ = 334303510.

The previous prime is 668607013. The next prime is 668607029. The reversal of 668607022 is 220706866.

668607022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668607029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167151754 + ... + 167151757.

It is an arithmetic number, because the mean of its divisors is an integer number (250727634).

Almost surely, 2^668607022 is an apocalyptic number.

668607022 is a deficient number, since it is larger than the sum of its proper divisors (334303514).

668607022 is a wasteful number, since it uses less digits than its factorization.

668607022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334303513.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 668607022 is about 25857.4364932025. The cubic root of 668607022 is about 874.4271720672.

The spelling of 668607022 in words is "six hundred sixty-eight million, six hundred seven thousand, twenty-two".