671870466 has 12 divisors (see below), whose sum is σ = 1455719382. Its totient is φ = 223956816.

The previous prime is 671870449. The next prime is 671870467. The reversal of 671870466 is 664078176.

671870466 is a `hidden beast` number, since 6 + 7 + 187 + 0 + 466 = 666.

It can be written as a sum of positive squares in only one way, i.e., 421439841 + 250430625 = 20529^2 + 15825^2 .

It is not an unprimeable number, because it can be changed into a prime (671870467) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18663051 + ... + 18663086.

Almost surely, 2^671870466 is an apocalyptic number.

671870466 is an abundant number, since it is smaller than the sum of its proper divisors (783848916).

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

671870466 is a wasteful number, since it uses less digits than its factorization.

671870466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37326145 (or 37326142 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 671870466 is about 25920.4642319539. The cubic root of 671870466 is about 875.8475449333.

The spelling of 671870466 in words is "six hundred seventy-one million, eight hundred seventy thousand, four hundred sixty-six".