662663 has 4 divisors (see below), whose sum is σ = 697560. Its totient is φ = 627768.

The previous prime is 662657. The next prime is 662671. The reversal of 662663 is 366266.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 662663 - 2⁴ = 662647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17420 + ... + 17457.

It is an arithmetic number, because the mean of its divisors is an integer number (174390).

2⁶⁶²⁶⁶³ is an apocalyptic number.

662663 is a deficient number, since it is larger than the sum of its proper divisors (34897).

662663 is a wasteful number, since it uses less digits than its factorization.

662663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34896.

The product of its digits is 7776, while the sum is 29.

The square root of 662663 is about 814.0411537508. The cubic root of 662663 is about 87.1828189785.

The spelling of 662663 in words is "six hundred sixty-two thousand, six hundred sixty-three".