660953 has 8 divisors (see below), whose sum is σ = 712800. Its totient is φ = 610848.

The previous prime is 660949. The next prime is 660973. The reversal of 660953 is 359066.

660953 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 a cyclic number.

It is not a de Polignac number, because 660953 - 2² = 660949 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (89100).

2⁶⁶⁰⁹⁵³ is an apocalyptic number.

It is an amenable number.

660953 is a deficient number, since it is larger than the sum of its proper divisors (51847).

660953 is a wasteful number, since it uses less digits than its factorization.

660953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 660953 is about 812.9901598420. The cubic root of 660953 is about 87.1077627079.

The spelling of 660953 in words is "six hundred sixty thousand, nine hundred fifty-three".