669023304723 has 12 divisors (see below), whose sum is σ = 968101952688. Its totient is φ = 445214787120.

The previous prime is 669023304721. The next prime is 669023304727. The reversal of 669023304723 is 327403320966.

669023304723 is a `hidden beast` number, since 66 + 90 + 2 + 3 + 30 + 472 + 3 = 666.

It is not a de Polignac number, because 669023304723 - 2¹ = 669023304721 is a prime.

It is a super-2 number, since 2×669023304723² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (669023304721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66723823 + ... + 66733848.

It is an arithmetic number, because the mean of its divisors is an integer number (80675162724).

Almost surely, 2^669023304723 is an apocalyptic number.

669023304723 is a deficient number, since it is larger than the sum of its proper divisors (299078647965).

669023304723 is a wasteful number, since it uses less digits than its factorization.

669023304723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133458234 (or 133458231 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 45.

The spelling of 669023304723 in words is "six hundred sixty-nine billion, twenty-three million, three hundred four thousand, seven hundred twenty-three".