662768564 has 18 divisors (see below), whose sum is σ = 1224104994. Its totient is φ = 313942320.

The previous prime is 662768501. The next prime is 662768569. The reversal of 662768564 is 465867266.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 610090000 + 52678564 = 24700^2 + 7258^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662768569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 228047 + ... + 230934.

It is an arithmetic number, because the mean of its divisors is an integer number (68005833).

Almost surely, 2^662768564 is an apocalyptic number.

It is an amenable number.

662768564 is a deficient number, since it is larger than the sum of its proper divisors (561336430).

662768564 is a wasteful number, since it uses less digits than its factorization.

662768564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459023 (or 459002 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The square root of 662768564 is about 25744.2918721801. The cubic root of 662768564 is about 871.8744821860.

The spelling of 662768564 in words is "six hundred sixty-two million, seven hundred sixty-eight thousand, five hundred sixty-four".