669624108 has 24 divisors (see below), whose sum is σ = 1566076848. Its totient is φ = 222690816.

The previous prime is 669624103. The next prime is 669624119. The reversal of 669624108 is 801426966.

It is a self number, because there is not a number n which added to its sum of digits gives 669624108.

It is not an unprimeable number, because it can be changed into a prime (669624103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59241 + ... + 69632.

It is an arithmetic number, because the mean of its divisors is an integer number (65253202).

Almost surely, 2^669624108 is an apocalyptic number.

It is an amenable number.

669624108 is an abundant number, since it is smaller than the sum of its proper divisors (896452740).

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

669624108 is a wasteful number, since it uses less digits than its factorization.

669624108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129313 (or 129311 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 669624108 is about 25877.0962049454. The cubic root of 669624108 is about 874.8703407334.

The spelling of 669624108 in words is "six hundred sixty-nine million, six hundred twenty-four thousand, one hundred eight".