666860048 has 20 divisors (see below), whose sum is σ = 1292447040. Its totient is φ = 333325344.

The previous prime is 666860023. The next prime is 666860069. The reversal of 666860048 is 840068666.

It is a junction number, because it is equal to n+sod(n) for n = 666859990 and 666860008.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 83861 + ... + 91467.

It is an arithmetic number, because the mean of its divisors is an integer number (64622352).

Almost surely, 2^666860048 is an apocalyptic number.

It is an amenable number.

666860048 is a deficient number, since it is larger than the sum of its proper divisors (625586992).

666860048 is a wasteful number, since it uses less digits than its factorization.

666860048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13094 (or 13088 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 666860048 is about 25823.6335166064. The cubic root of 666860048 is about 873.6649236480.

The spelling of 666860048 in words is "six hundred sixty-six million, eight hundred sixty thousand, forty-eight".