662823 has 30 divisors (see below), whose sum is σ = 1158696. Its totient is φ = 376488.

The previous prime is 662819. The next prime is 662833. The reversal of 662823 is 328266.

662823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 662823 - 2² = 662819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662833) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3886 + ... + 4052.

2⁶⁶²⁸²³ is an apocalyptic number.

662823 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

662823 is a deficient number, since it is larger than the sum of its proper divisors (495873).

662823 is a wasteful number, since it uses less digits than its factorization.

662823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 177 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 662823 is about 814.1394229492. The cubic root of 662823 is about 87.1898351785.

It can be divided in two parts, 662 and 823, that added together give a triangular number (1485 = T₅₄).

The spelling of 662823 in words is "six hundred sixty-two thousand, eight hundred twenty-three".