401200664 has 32 divisors (see below), whose sum is σ = 775455120. Its totient is φ = 194482176.

The previous prime is 401200651. The next prime is 401200687. The reversal of 401200664 is 466002104.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42872 + ... + 51384.

Almost surely, 2^401200664 is an apocalyptic number.

It is an amenable number.

401200664 is a deficient number, since it is larger than the sum of its proper divisors (374254456).

401200664 is a wasteful number, since it uses less digits than its factorization.

401200664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8699 (or 8695 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 401200664 is about 20029.9941088359. The cubic root of 401200664 is about 737.5427773330.

Adding to 401200664 its reverse (466002104), we get a palindrome (867202768).

The spelling of 401200664 in words is "four hundred one million, two hundred thousand, six hundred sixty-four".