406664260 has 12 divisors (see below), whose sum is σ = 853994988. Its totient is φ = 162665696.

The previous prime is 406664249. The next prime is 406664267. The reversal of 406664260 is 62466604.

It can be written as a sum of positive squares in 2 ways, for example, as 314849536 + 91814724 = 17744^2 + 9582^2 .

It is a super-2 number, since 2×406664260² = 330751640722695200, which contains 22 as substring.

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, 10166587 + ... + 10166626.

It is an arithmetic number, because the mean of its divisors is an integer number (71166249).

Almost surely, 2^406664260 is an apocalyptic number.

It is an amenable number.

406664260 is an abundant number, since it is smaller than the sum of its proper divisors (447330728).

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

406664260 is a wasteful number, since it uses less digits than its factorization.

406664260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20333222 (or 20333220 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 406664260 is about 20165.9182781246. The cubic root of 406664260 is about 740.8756738630.

The spelling of 406664260 in words is "four hundred six million, six hundred sixty-four thousand, two hundred sixty".