669141930 has 96 divisors (see below), whose sum is σ = 1723581504. Its totient is φ = 166211584.

The previous prime is 669141919. The next prime is 669142021. The reversal of 669141930 is 39141966.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 979369 + ... + 980051.

It is an arithmetic number, because the mean of its divisors is an integer number (17953974).

Almost surely, 2^669141930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669141930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861790752).

669141930 is an abundant number, since it is smaller than the sum of its proper divisors (1054439574).

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

669141930 is a wasteful number, since it uses less digits than its factorization.

669141930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 823 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 669141930 is about 25867.7778326628. Note that the first 3 decimals coincide. The cubic root of 669141930 is about 874.6603002449.

The spelling of 669141930 in words is "six hundred sixty-nine million, one hundred forty-one thousand, nine hundred thirty".