668030387633 has 24 divisors (see below), whose sum is σ = 802975463424. Its totient is φ = 553566182400.

The previous prime is 668030387599. The next prime is 668030387659. The reversal of 668030387633 is 336783030866.

It is not a de Polignac number, because 668030387633 - 2⁸ = 668030387377 is a prime.

It is a super-3 number, since 3×668030387633³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (668030387663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1283441 + ... + 1727217.

It is an arithmetic number, because the mean of its divisors is an integer number (33457310976).

Almost surely, 2^668030387633 is an apocalyptic number.

It is an amenable number.

668030387633 is a deficient number, since it is larger than the sum of its proper divisors (134945075791).

668030387633 is a wasteful number, since it uses less digits than its factorization.

668030387633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444813 (or 444806 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 53.

The spelling of 668030387633 in words is "six hundred sixty-eight billion, thirty million, three hundred eighty-seven thousand, six hundred thirty-three".