662863 has 4 divisors (see below), whose sum is σ = 669528. Its totient is φ = 656200.

The previous prime is 662843. The next prime is 662867. The reversal of 662863 is 368266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368266 = 2 ⋅184133.

It is a cyclic number.

It is not a de Polignac number, because 662863 - 2⁹ = 662351 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3181 + ... + 3382.

It is an arithmetic number, because the mean of its divisors is an integer number (167382).

2⁶⁶²⁸⁶³ is an apocalyptic number.

662863 is a deficient number, since it is larger than the sum of its proper divisors (6665).

662863 is a wasteful number, since it uses less digits than its factorization.

662863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6664.

The product of its digits is 10368, while the sum is 31.

The square root of 662863 is about 814.1639883955. The cubic root of 662863 is about 87.1915890521.

The spelling of 662863 in words is "six hundred sixty-two thousand, eight hundred sixty-three".