669675197 has 8 divisors (see below), whose sum is σ = 708031200. Its totient is φ = 631630224.

The previous prime is 669675151. The next prime is 669675211. The reversal of 669675197 is 791576966.

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

It is not a de Polignac number, because 669675197 - 2¹⁴ = 669658813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669675697) 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, 73322 + ... + 81947.

It is an arithmetic number, because the mean of its divisors is an integer number (88503900).

Almost surely, 2^669675197 is an apocalyptic number.

It is an amenable number.

669675197 is a deficient number, since it is larger than the sum of its proper divisors (38356003).

669675197 is a wasteful number, since it uses less digits than its factorization.

669675197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155515.

The product of its digits is 4286520, while the sum is 56.

The square root of 669675197 is about 25878.0833331992. The cubic root of 669675197 is about 874.8925895909.

The spelling of 669675197 in words is "six hundred sixty-nine million, six hundred seventy-five thousand, one hundred ninety-seven".