662213556 has 30 divisors (see below), whose sum is σ = 1731157890. Its totient is φ = 220737744.

The previous prime is 662213533. The next prime is 662213567. The reversal of 662213556 is 655312266.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 496576656 + 165636900 = 22284^2 + 12870^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 662213556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1021611 + ... + 1022258.

It is an arithmetic number, because the mean of its divisors is an integer number (57705263).

Almost surely, 2^662213556 is an apocalyptic number.

It is an amenable number.

662213556 is an abundant number, since it is smaller than the sum of its proper divisors (1068944334).

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

662213556 is a wasteful number, since it uses less digits than its factorization.

662213556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043885 (or 2043874 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 662213556 is about 25733.5103707209. The cubic root of 662213556 is about 871.6310425325.

The spelling of 662213556 in words is "six hundred sixty-two million, two hundred thirteen thousand, five hundred fifty-six".