660982 has 16 divisors (see below), whose sum is σ = 1170432. Its totient is φ = 273960.

The previous prime is 660973. The next prime is 660983. The reversal of 660982 is 289066.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660983) by changing a digit.

660982 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (73152).

2⁶⁶⁰⁹⁸² is an apocalyptic number.

660982 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

660982 is a deficient number, since it is larger than the sum of its proper divisors (509450).

660982 is a wasteful number, since it uses less digits than its factorization.

660982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 660982 is about 813.0079950406. The cubic root of 660982 is about 87.1090366704.

The spelling of 660982 in words is "six hundred sixty thousand, nine hundred eighty-two".