666674034 has 64 divisors (see below), whose sum is σ = 1488872448. Its totient is φ = 197625600.

The previous prime is 666674027. The next prime is 666674039. The reversal of 666674034 is 430476666.

It is not an unprimeable number, because it can be changed into a prime (666674039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708004 + ... + 708944.

It is an arithmetic number, because the mean of its divisors is an integer number (23263632).

Almost surely, 2^666674034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666674034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744436224).

666674034 is an abundant number, since it is smaller than the sum of its proper divisors (822198414).

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

666674034 is a wasteful number, since it uses less digits than its factorization.

666674034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283.

The product of its (nonzero) digits is 435456, while the sum is 42.

The square root of 666674034 is about 25820.0316421185. The cubic root of 666674034 is about 873.5836827037.

The spelling of 666674034 in words is "six hundred sixty-six million, six hundred seventy-four thousand, thirty-four".