669816753 has 4 divisors (see below), whose sum is σ = 893089008. Its totient is φ = 446544500.

The previous prime is 669816751. The next prime is 669816767. The reversal of 669816753 is 357618966.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 669816753 - 2¹ = 669816751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 669816696 and 669816705.

It is not an unprimeable number, because it can be changed into a prime (669816751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111636123 + ... + 111636128.

It is an arithmetic number, because the mean of its divisors is an integer number (223272252).

Almost surely, 2^669816753 is an apocalyptic number.

It is an amenable number.

669816753 is a deficient number, since it is larger than the sum of its proper divisors (223272255).

669816753 is a wasteful number, since it uses less digits than its factorization.

669816753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223272254.

The product of its digits is 1632960, while the sum is 51.

The square root of 669816753 is about 25880.8182444064. The cubic root of 669816753 is about 874.9542302045.

The spelling of 669816753 in words is "six hundred sixty-nine million, eight hundred sixteen thousand, seven hundred fifty-three".