406668957 has 16 divisors (see below), whose sum is σ = 577843200. Its totient is φ = 253805552.

The previous prime is 406668953. The next prime is 406668959. The reversal of 406668957 is 759866604.

It is not a de Polignac number, because 406668957 - 2² = 406668953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406668953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59457 + ... + 65942.

It is an arithmetic number, because the mean of its divisors is an integer number (36115200).

Almost surely, 2^406668957 is an apocalyptic number.

406668957 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

406668957 is a deficient number, since it is larger than the sum of its proper divisors (171174243).

406668957 is a wasteful number, since it uses less digits than its factorization.

406668957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125472.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The square root of 406668957 is about 20166.0347366556. The cubic root of 406668957 is about 740.8785262402.

The spelling of 406668957 in words is "four hundred six million, six hundred sixty-eight thousand, nine hundred fifty-seven".