659955 has 8 divisors (see below), whose sum is σ = 1055952. Its totient is φ = 351968.

The previous prime is 659951. The next prime is 659963. The reversal of 659955 is 559956.

659955 is digitally balanced in base 2 and base 7, because in such bases 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 659955 - 2² = 659951 is a prime.

659955 is strictly pandigital in base 7.

It is not an unprimeable number, because it can be changed into a prime (659951) 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, 21984 + ... + 22013.

It is an arithmetic number, because the mean of its divisors is an integer number (131994).

2⁶⁵⁹⁹⁵⁵ is an apocalyptic number.

659955 is a deficient number, since it is larger than the sum of its proper divisors (395997).

659955 is a wasteful number, since it uses less digits than its factorization.

659955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44005.

The product of its digits is 60750, while the sum is 39.

The square root of 659955 is about 812.3761444060. The cubic root of 659955 is about 87.0638980968.

Subtracting from 659955 its reverse (559956), we obtain a palindrome (99999).

The spelling of 659955 in words is "six hundred fifty-nine thousand, nine hundred fifty-five".