669873948 has 24 divisors (see below), whose sum is σ = 1564023552. Its totient is φ = 223150704.

The previous prime is 669873889. The next prime is 669873977. The reversal of 669873948 is 849378966.

It is a super-2 number, since 2×669873948² = 897462212418213408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 669873891 and 669873900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3261 + ... + 36747.

It is an arithmetic number, because the mean of its divisors is an integer number (65167648).

Almost surely, 2^669873948 is an apocalyptic number.

It is an amenable number.

669873948 is an abundant number, since it is smaller than the sum of its proper divisors (894149604).

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

669873948 is a wasteful number, since it uses less digits than its factorization.

669873948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35161 (or 35159 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 60.

The square root of 669873948 is about 25881.9231897477. The cubic root of 669873948 is about 874.9791333255.

The spelling of 669873948 in words is "six hundred sixty-nine million, eight hundred seventy-three thousand, nine hundred forty-eight".