666894130 has 32 divisors (see below), whose sum is σ = 1379032704. Its totient is φ = 227460096.

The previous prime is 666894101. The next prime is 666894133. The reversal of 666894130 is 31498666.

It is not an unprimeable number, because it can be changed into a prime (666894133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11172 + ... + 38191.

It is an arithmetic number, because the mean of its divisors is an integer number (43094772).

Almost surely, 2^666894130 is an apocalyptic number.

666894130 is an abundant number, since it is smaller than the sum of its proper divisors (712138574).

666894130 is a wasteful number, since it uses less digits than its factorization.

666894130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49570.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 666894130 is about 25824.2934075649. The cubic root of 666894130 is about 873.6798072010.

The spelling of 666894130 in words is "six hundred sixty-six million, eight hundred ninety-four thousand, one hundred thirty".