669602845 has 8 divisors (see below), whose sum is σ = 845814240. Its totient is φ = 507488400.

The previous prime is 669602833. The next prime is 669602849. The reversal of 669602845 is 548206966.

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

It is not a de Polignac number, because 669602845 - 2²¹ = 667505693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 669602795 and 669602804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669602849) 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, 3524131 + ... + 3524320.

It is an arithmetic number, because the mean of its divisors is an integer number (105726780).

Almost surely, 2^669602845 is an apocalyptic number.

It is an amenable number.

669602845 is a deficient number, since it is larger than the sum of its proper divisors (176211395).

669602845 is a wasteful number, since it uses less digits than its factorization.

669602845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7048475.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 669602845 is about 25876.6853557406. The cubic root of 669602845 is about 874.8610805306.

The spelling of 669602845 in words is "six hundred sixty-nine million, six hundred two thousand, eight hundred forty-five".