666156002 has 8 divisors (see below), whose sum is σ = 1008935616. Its totient is φ = 329844132.

The previous prime is 666155977. The next prime is 666156047. The reversal of 666156002 is 200651666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 666156002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616678 + ... + 1617089.

It is an arithmetic number, because the mean of its divisors is an integer number (126116952).

Almost surely, 2^666156002 is an apocalyptic number.

666156002 is a deficient number, since it is larger than the sum of its proper divisors (342779614).

666156002 is a wasteful number, since it uses less digits than its factorization.

666156002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233872.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 666156002 is about 25809.9981015110. The cubic root of 666156002 is about 873.3573544209.

The spelling of 666156002 in words is "six hundred sixty-six million, one hundred fifty-six thousand, two".