406736668 has 12 divisors (see below), whose sum is σ = 766542280. Its totient is φ = 187724592.

The previous prime is 406736663. The next prime is 406736689. The reversal of 406736668 is 866637604.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406736663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3910878 + ... + 3910981.

Almost surely, 2^406736668 is an apocalyptic number.

It is an amenable number.

406736668 is a deficient number, since it is larger than the sum of its proper divisors (359805612).

406736668 is a wasteful number, since it uses less digits than its factorization.

406736668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7821876 (or 7821874 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 46.

The square root of 406736668 is about 20167.7135045101. The cubic root of 406736668 is about 740.9196430922.

The spelling of 406736668 in words is "four hundred six million, seven hundred thirty-six thousand, six hundred sixty-eight".