666673274 has 8 divisors (see below), whose sum is σ = 1000119540. Its totient is φ = 333300096.

The previous prime is 666673229. The next prime is 666673277. The reversal of 666673274 is 472376666.

It can be written as a sum of positive squares in 2 ways, for example, as 566773249 + 99900025 = 23807^2 + 9995^2 .

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

It is not an unprimeable number, because it can be changed into a prime (666673277) 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, 25652 + ... + 44624.

Almost surely, 2^666673274 is an apocalyptic number.

666673274 is a deficient number, since it is larger than the sum of its proper divisors (333446266).

666673274 is a wasteful number, since it uses less digits than its factorization.

666673274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36544.

The product of its digits is 1524096, while the sum is 47.

The square root of 666673274 is about 25820.0169248589. The cubic root of 666673274 is about 873.5833507454.

The spelling of 666673274 in words is "six hundred sixty-six million, six hundred seventy-three thousand, two hundred seventy-four".