662658 has 16 divisors (see below), whose sum is σ = 1334880. Its totient is φ = 219296.

The previous prime is 662657. The next prime is 662671. The reversal of 662658 is 856266.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 662658.

It is not an unprimeable number, because it can be changed into a prime (662657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766 + ... + 1382.

It is an arithmetic number, because the mean of its divisors is an integer number (83430).

2⁶⁶²⁶⁵⁸ is an apocalyptic number.

662658 is an abundant number, since it is smaller than the sum of its proper divisors (672222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

662658 is a wasteful number, since it uses less digits than its factorization.

662658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801.

The product of its digits is 17280, while the sum is 33.

The square root of 662658 is about 814.0380826472. The cubic root of 662658 is about 87.1825997040.

The spelling of 662658 in words is "six hundred sixty-two thousand, six hundred fifty-eight".