669875647158 has 24 divisors (see below), whose sum is σ = 1505152689768. Its totient is φ = 223291882224.

The previous prime is 669875647157. The next prime is 669875647159. The reversal of 669875647158 is 851746578966.

669875647158 is a `hidden beast` number, since 6 + 6 + 9 + 8 + 7 + 564 + 7 + 1 + 58 = 666.

It is an interprime number because it is at equal distance from previous prime (669875647157) and next prime (669875647159).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669875647153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 689171991 + ... + 689172962.

It is an arithmetic number, because the mean of its divisors is an integer number (62714695407).

Almost surely, 2^669875647158 is an apocalyptic number.

669875647158 is an abundant number, since it is smaller than the sum of its proper divisors (835277042610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669875647158 is a wasteful number, since it uses less digits than its factorization.

669875647158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378344970 (or 1378344958 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 72.

The spelling of 669875647158 in words is "six hundred sixty-nine billion, eight hundred seventy-five million, six hundred forty-seven thousand, one hundred fifty-eight".