406345656 has 16 divisors (see below), whose sum is σ = 1015864200. Its totient is φ = 135448544.

The previous prime is 406345637. The next prime is 406345733. The reversal of 406345656 is 656543604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8465511 + ... + 8465558.

Almost surely, 2^406345656 is an apocalyptic number.

It is an amenable number.

406345656 is an abundant number, since it is smaller than the sum of its proper divisors (609518544).

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

406345656 is a wasteful number, since it uses less digits than its factorization.

406345656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16931078 (or 16931074 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The square root of 406345656 is about 20158.0171643939. The cubic root of 406345656 is about 740.6821418783.

The spelling of 406345656 in words is "four hundred six million, three hundred forty-five thousand, six hundred fifty-six".