668053783 has 8 divisors (see below), whose sum is σ = 677484800. Its totient is φ = 658647288.

The previous prime is 668053703. The next prime is 668053787. The reversal of 668053783 is 387350866.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-668053783 is a prime.

It is a super-2 number, since 2×668053783² = 892591713961222178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668053787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52660 + ... + 64102.

It is an arithmetic number, because the mean of its divisors is an integer number (84685600).

Almost surely, 2^668053783 is an apocalyptic number.

668053783 is a deficient number, since it is larger than the sum of its proper divisors (9431017).

668053783 is a wasteful number, since it uses less digits than its factorization.

668053783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12261.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 668053783 is about 25846.7364090711. The cubic root of 668053783 is about 874.1859238747.

The spelling of 668053783 in words is "six hundred sixty-eight million, fifty-three thousand, seven hundred eighty-three".