406666673740 has 48 divisors (see below), whose sum is σ = 872508776832. Its totient is φ = 159143878656.

The previous prime is 406666673737. The next prime is 406666673759. The reversal of 406666673740 is 47376666604.

It is a happy number.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2377324 + ... + 2542636.

It is an arithmetic number, because the mean of its divisors is an integer number (18177266184).

Almost surely, 2^406666673740 is an apocalyptic number.

It is an amenable number.

406666673740 is an abundant number, since it is smaller than the sum of its proper divisors (465842103092).

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

406666673740 is a wasteful number, since it uses less digits than its factorization.

406666673740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167986 (or 167984 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 55.

The spelling of 406666673740 in words is "four hundred six billion, six hundred sixty-six million, six hundred seventy-three thousand, seven hundred forty".