666274 has 8 divisors (see below), whose sum is σ = 1142208. Its totient is φ = 285540.

The previous prime is 666269. The next prime is 666277. The reversal of 666274 is 472666.

666274 is nontrivially palindromic in base 8.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (666277) 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, 23782 + ... + 23809.

It is an arithmetic number, because the mean of its divisors is an integer number (142776).

2⁶⁶⁶²⁷⁴ is an apocalyptic number.

666274 is a deficient number, since it is larger than the sum of its proper divisors (475934).

666274 is a wasteful number, since it uses less digits than its factorization.

666274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47600.

The product of its digits is 12096, while the sum is 31.

The square root of 666274 is about 816.2560872667. The cubic root of 666274 is about 87.3408918087.

The spelling of 666274 in words is "six hundred sixty-six thousand, two hundred seventy-four".