653757668 has 12 divisors (see below), whose sum is σ = 1147265280. Its totient is φ = 325967592.

The previous prime is 653757631. The next prime is 653757677. The reversal of 653757668 is 866757356.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226196 + ... + 229067.

It is an arithmetic number, because the mean of its divisors is an integer number (95605440).

Almost surely, 2^653757668 is an apocalyptic number.

It is an amenable number.

653757668 is a deficient number, since it is larger than the sum of its proper divisors (493507612).

653757668 is a wasteful number, since it uses less digits than its factorization.

653757668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455626 (or 455624 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 53.

The square root of 653757668 is about 25568.6853005781. The cubic root of 653757668 is about 867.9051497226.

The spelling of 653757668 in words is "six hundred fifty-three million, seven hundred fifty-seven thousand, six hundred sixty-eight".