662563 has 16 divisors (see below), whose sum is σ = 783360. Its totient is φ = 554400.

The previous prime is 662551. The next prime is 662567. The reversal of 662563 is 365266.

It is not a de Polignac number, because 662563 - 2⁵ = 662531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9856 + ... + 9922.

It is an arithmetic number, because the mean of its divisors is an integer number (48960).

2⁶⁶²⁵⁶³ is an apocalyptic number.

662563 is a deficient number, since it is larger than the sum of its proper divisors (120797).

662563 is a wasteful number, since it uses less digits than its factorization.

662563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138.

The product of its digits is 6480, while the sum is 28.

The square root of 662563 is about 813.9797294773. The cubic root of 662563 is about 87.1784332799.

It can be divided in two parts, 662 and 563, that added together give a triangular number (1225 = T₄₉).

The spelling of 662563 in words is "six hundred sixty-two thousand, five hundred sixty-three".