406664207 has 4 divisors (see below), whose sum is σ = 408246816. Its totient is φ = 405081600.

The previous prime is 406664197. The next prime is 406664213. The reversal of 406664207 is 702466604.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 406664207 - 2⁶ = 406664143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406664267) 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, 790919 + ... + 791432.

It is an arithmetic number, because the mean of its divisors is an integer number (102061704).

Almost surely, 2^406664207 is an apocalyptic number.

406664207 is a deficient number, since it is larger than the sum of its proper divisors (1582609).

406664207 is a wasteful number, since it uses less digits than its factorization.

406664207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582608.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 406664207 is about 20165.9169640262. The cubic root of 406664207 is about 740.8756416772.

The spelling of 406664207 in words is "four hundred six million, six hundred sixty-four thousand, two hundred seven".