666484402 has 8 divisors (see below), whose sum is σ = 999945216. Its totient is φ = 333169332.

The previous prime is 666484361. The next prime is 666484411. The reversal of 666484402 is 204484666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24178 + ... + 43789.

It is an arithmetic number, because the mean of its divisors is an integer number (124993152).

Almost surely, 2^666484402 is an apocalyptic number.

666484402 is a deficient number, since it is larger than the sum of its proper divisors (333460814).

666484402 is a wasteful number, since it uses less digits than its factorization.

666484402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72872.

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 666484402 is about 25816.3591933487. The cubic root of 666484402 is about 873.5008460539.

The spelling of 666484402 in words is "six hundred sixty-six million, four hundred eighty-four thousand, four hundred two".