668753704 has 16 divisors (see below), whose sum is σ = 1308431520. Its totient is φ = 319838640.

The previous prime is 668753699. The next prime is 668753707. The reversal of 668753704 is 407357866.

It is a super-2 number, since 2×668753704² = 894463033227439232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (668753707) by changing a digit.

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, 1817082 + ... + 1817449.

It is an arithmetic number, because the mean of its divisors is an integer number (81776970).

Almost surely, 2^668753704 is an apocalyptic number.

It is an amenable number.

668753704 is a deficient number, since it is larger than the sum of its proper divisors (639677816).

668753704 is a wasteful number, since it uses less digits than its factorization.

668753704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634560 (or 3634556 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 668753704 is about 25860.2726977114. The cubic root of 668753704 is about 874.4911126401.

The spelling of 668753704 in words is "six hundred sixty-eight million, seven hundred fifty-three thousand, seven hundred four".