653768 has 16 divisors (see below), whose sum is σ = 1244160. Its totient is φ = 322000.

The previous prime is 653761. The next prime is 653777. The reversal of 653768 is 867356.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (653761) by changing a digit.

653768 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 8 + ... + 1143.

It is an arithmetic number, because the mean of its divisors is an integer number (77760).

2⁶⁵³⁷⁶⁸ is an apocalyptic number.

It is an amenable number.

653768 is a deficient number, since it is larger than the sum of its proper divisors (590392).

653768 is a wasteful number, since it uses less digits than its factorization.

653768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 1224 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 653768 is about 808.5592124266. The cubic root of 653768 is about 86.7909721829.

The spelling of 653768 in words is "six hundred fifty-three thousand, seven hundred sixty-eight".