662749772 has 24 divisors (see below), whose sum is σ = 1207495296. Its totient is φ = 317996928.

The previous prime is 662749753. The next prime is 662749783. The reversal of 662749772 is 277947266.

It is a self number, because there is not a number n which added to its sum of digits gives 662749772.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19868 + ... + 41475.

It is an arithmetic number, because the mean of its divisors is an integer number (50312304).

Almost surely, 2^662749772 is an apocalyptic number.

It is an amenable number.

662749772 is a deficient number, since it is larger than the sum of its proper divisors (544745524).

662749772 is a wasteful number, since it uses less digits than its factorization.

662749772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61457 (or 61455 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 50.

The square root of 662749772 is about 25743.9268954835. The cubic root of 662749772 is about 871.8662417931.

The spelling of 662749772 in words is "six hundred sixty-two million, seven hundred forty-nine thousand, seven hundred seventy-two".