669674617 has 8 divisors (see below), whose sum is σ = 696254720. Its totient is φ = 643405680.

The previous prime is 669674611. The next prime is 669674633. The reversal of 669674617 is 716476966.

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

It is a cyclic number.

It is not a de Polignac number, because 669674617 - 2³ = 669674609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669674611) 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, 73398 + ... + 82015.

It is an arithmetic number, because the mean of its divisors is an integer number (87031840).

Almost surely, 2^669674617 is an apocalyptic number.

It is an amenable number.

669674617 is a deficient number, since it is larger than the sum of its proper divisors (26580103).

669674617 is a wasteful number, since it uses less digits than its factorization.

669674617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155583.

The product of its digits is 2286144, while the sum is 52.

The square root of 669674617 is about 25878.0721268026. The cubic root of 669674617 is about 874.8923370118.

The spelling of 669674617 in words is "six hundred sixty-nine million, six hundred seventy-four thousand, six hundred seventeen".