406756657604 has 24 divisors (see below), whose sum is σ = 822213993888. Its totient is φ = 174013543040.

The previous prime is 406756657561. The next prime is 406756657613.

406756657604 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 406756657604.

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, 271895414 + ... + 271896909.

It is an arithmetic number, because the mean of its divisors is an integer number (34258916412).

Almost surely, 2^406756657604 is an apocalyptic number.

406756657604 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

406756657604 is an abundant number, since it is smaller than the sum of its proper divisors (415457336284).

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

406756657604 is a wasteful number, since it uses less digits than its factorization.

406756657604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543792355 (or 543792353 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 56.

The spelling of 406756657604 in words is "four hundred six billion, seven hundred fifty-six million, six hundred fifty-seven thousand, six hundred four".