660351982 has 8 divisors (see below), whose sum is σ = 1024684200. Its totient is φ = 318790584.

The previous prime is 660351977. The next prime is 660351997. The reversal of 660351982 is 289153066.

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

It is a congruent number.

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, 5692632 + ... + 5692747.

It is an arithmetic number, because the mean of its divisors is an integer number (128085525).

Almost surely, 2^660351982 is an apocalyptic number.

660351982 is a deficient number, since it is larger than the sum of its proper divisors (364332218).

660351982 is a wasteful number, since it uses less digits than its factorization.

660351982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11385410.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 660351982 is about 25697.3146846125. The cubic root of 660351982 is about 870.8135174773.

It can be divided in two parts, 6603 and 51982, that added together give a palindrome (58585).

The spelling of 660351982 in words is "six hundred sixty million, three hundred fifty-one thousand, nine hundred eighty-two".