666329836 has 12 divisors (see below), whose sum is σ = 1166438728. Its totient is φ = 333061632.

The previous prime is 666329831. The next prime is 666329837. The reversal of 666329836 is 638923666.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 666329836.

It is not an unprimeable number, because it can be changed into a prime (666329831) 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, 10266 + ... + 37921.

Almost surely, 2^666329836 is an apocalyptic number.

It is an amenable number.

666329836 is a deficient number, since it is larger than the sum of its proper divisors (500108892).

666329836 is a wasteful number, since it uses less digits than its factorization.

666329836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51648 (or 51646 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 49.

The square root of 666329836 is about 25813.3654528037. The cubic root of 666329836 is about 873.4333156062.

The spelling of 666329836 in words is "six hundred sixty-six million, three hundred twenty-nine thousand, eight hundred thirty-six".