669662943 has 8 divisors (see below), whose sum is σ = 896620800. Its totient is φ = 444573528.

The previous prime is 669662911. The next prime is 669662947. The reversal of 669662943 is 349266966.

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

It is not a de Polignac number, because 669662943 - 2⁵ = 669662911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669662947) 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, 466273 + ... + 467706.

It is an arithmetic number, because the mean of its divisors is an integer number (112077600).

Almost surely, 2^669662943 is an apocalyptic number.

669662943 is a deficient number, since it is larger than the sum of its proper divisors (226957857).

669662943 is a wasteful number, since it uses less digits than its factorization.

669662943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934221.

The product of its digits is 2519424, while the sum is 51.

The square root of 669662943 is about 25877.8465680589. The cubic root of 669662943 is about 874.8872531735.

The spelling of 669662943 in words is "six hundred sixty-nine million, six hundred sixty-two thousand, nine hundred forty-three".