400700668 has 24 divisors (see below), whose sum is σ = 724666880. Its totient is φ = 193667760.

The previous prime is 400700653. The next prime is 400700689. The reversal of 400700668 is 866007004.

It is a super-2 number, since 2×400700668² = 321122050671292448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 182803 + ... + 184981.

Almost surely, 2^400700668 is an apocalyptic number.

It is an amenable number.

400700668 is a deficient number, since it is larger than the sum of its proper divisors (323966212).

400700668 is a wasteful number, since it uses less digits than its factorization.

400700668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697 (or 3695 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 400700668 is about 20017.5090358416. The cubic root of 400700668 is about 737.2362626050.

The spelling of 400700668 in words is "four hundred million, seven hundred thousand, six hundred sixty-eight".