666271468 has 24 divisors (see below), whose sum is σ = 1208438784. Its totient is φ = 321090000.

The previous prime is 666271457. The next prime is 666271471. The reversal of 666271468 is 864172666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20421 + ... + 41827.

It is an arithmetic number, because the mean of its divisors is an integer number (50351616).

Almost surely, 2^666271468 is an apocalyptic number.

It is an amenable number.

666271468 is a deficient number, since it is larger than the sum of its proper divisors (542167316).

666271468 is a wasteful number, since it uses less digits than its factorization.

666271468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21693 (or 21691 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 666271468 is about 25812.2348509384. The cubic root of 666271468 is about 873.4078116982.

The spelling of 666271468 in words is "six hundred sixty-six million, two hundred seventy-one thousand, four hundred sixty-eight".