660965 has 8 divisors (see below), whose sum is σ = 799008. Its totient is φ = 524880.

The previous prime is 660949. The next prime is 660973. The reversal of 660965 is 569066.

660965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 660965 - 2⁴ = 660949 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 410 + ... + 1220.

It is an arithmetic number, because the mean of its divisors is an integer number (99876).

2⁶⁶⁰⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

660965 is a deficient number, since it is larger than the sum of its proper divisors (138043).

660965 is a wasteful number, since it uses less digits than its factorization.

660965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 660965 is about 812.9975399717. The cubic root of 660965 is about 87.1082898693.

The spelling of 660965 in words is "six hundred sixty thousand, nine hundred sixty-five".