660698 has 16 divisors (see below), whose sum is σ = 1057536. Its totient is φ = 308880.

The previous prime is 660683. The next prime is 660719. The reversal of 660698 is 896066.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2303 + ... + 2573.

It is an arithmetic number, because the mean of its divisors is an integer number (66096).

2⁶⁶⁰⁶⁹⁸ is an apocalyptic number.

660698 is a deficient number, since it is larger than the sum of its proper divisors (396838).

660698 is a wasteful number, since it uses less digits than its factorization.

660698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 660698 is about 812.8333162463. The cubic root of 660698 is about 87.0965590183.

The spelling of 660698 in words is "six hundred sixty thousand, six hundred ninety-eight".