662985 has 20 divisors (see below), whose sum is σ = 1189188. Its totient is φ = 353376.

The previous prime is 662957. The next prime is 662999. The reversal of 662985 is 589266.

662985 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 can be written as a sum of positive squares in 2 ways, for example, as 104976 + 558009 = 324^2 + 747^2 .

It is not a de Polignac number, because 662985 - 2⁵ = 662953 is a prime.

It is a super-2 number, since 2×662985² = 879098220450, which contains 22 as substring.

662985 is strictly pandigital in base 7.

662985 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 414 + ... + 1223.

2⁶⁶²⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

662985 is a deficient number, since it is larger than the sum of its proper divisors (526203).

662985 is a wasteful number, since it uses less digits than its factorization.

662985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 1645 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 662985 is about 814.2389084292. The cubic root of 662985 is about 87.1969379308.

The spelling of 662985 in words is "six hundred sixty-two thousand, nine hundred eighty-five".