666670374 has 12 divisors (see below), whose sum is σ = 1444452516. Its totient is φ = 222223452.

The previous prime is 666670349. The next prime is 666670421. The reversal of 666670374 is 473076666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18518604 + ... + 18518639.

It is an arithmetic number, because the mean of its divisors is an integer number (120371043).

Almost surely, 2^666670374 is an apocalyptic number.

666670374 is an abundant number, since it is smaller than the sum of its proper divisors (777782142).

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

666670374 is a wasteful number, since it uses less digits than its factorization.

666670374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37037251 (or 37037248 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The square root of 666670374 is about 25819.9607668176. The cubic root of 666670374 is about 873.5820840603.

The spelling of 666670374 in words is "six hundred sixty-six million, six hundred seventy thousand, three hundred seventy-four".