406736664 has 32 divisors (see below), whose sum is σ = 1021075440. Its totient is φ = 135014400.

The previous prime is 406736663. The next prime is 406736689. The reversal of 406736664 is 466637604.

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 7 ways as a sum of consecutive naturals, for example, 29377 + ... + 40944.

Almost surely, 2^406736664 is an apocalyptic number.

It is an amenable number.

406736664 is an abundant number, since it is smaller than the sum of its proper divisors (614338776).

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

406736664 is a wasteful number, since it uses less digits than its factorization.

406736664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70571 (or 70567 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 42.

The square root of 406736664 is about 20167.7134053417. The cubic root of 406736664 is about 740.9196406634.

The spelling of 406736664 in words is "four hundred six million, seven hundred thirty-six thousand, six hundred sixty-four".