669711180 has 48 divisors (see below), whose sum is σ = 1910581344. Its totient is φ = 175219200.

The previous prime is 669711167. The next prime is 669711191. The reversal of 669711180 is 81117966.

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 15 ways as a sum of consecutive naturals, for example, 102121 + ... + 108480.

It is an arithmetic number, because the mean of its divisors is an integer number (39803778).

Almost surely, 2^669711180 is an apocalyptic number.

669711180 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669711180 is an abundant number, since it is smaller than the sum of its proper divisors (1240870164).

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

669711180 is a wasteful number, since it uses less digits than its factorization.

669711180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210666 (or 210664 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 669711180 is about 25878.7785646850. The cubic root of 669711180 is about 874.9082592252.

The spelling of 669711180 in words is "six hundred sixty-nine million, seven hundred eleven thousand, one hundred eighty".