662805 has 48 divisors (see below), whose sum is σ = 1362816. Its totient is φ = 293760.

The previous prime is 662797. The next prime is 662819. The reversal of 662805 is 508266.

It is not a de Polignac number, because 662805 - 2³ = 662797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6384 + ... + 6486.

It is an arithmetic number, because the mean of its divisors is an integer number (28392).

2⁶⁶²⁸⁰⁵ is an apocalyptic number.

662805 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

662805 is an abundant number, since it is smaller than the sum of its proper divisors (700011).

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

662805 is a wasteful number, since it uses less digits than its factorization.

662805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 662805 is about 814.1283682565. The cubic root of 662805 is about 87.1890459124.

The spelling of 662805 in words is "six hundred sixty-two thousand, eight hundred five".