66169080 has 96 divisors (see below), whose sum is σ = 220343760. Its totient is φ = 17210880.

The previous prime is 66169073. The next prime is 66169093. The reversal of 66169080 is 8096166.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12519 + ... + 17001.

Almost surely, 2^66169080 is an apocalyptic number.

66169080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66169080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110171880).

66169080 is an abundant number, since it is smaller than the sum of its proper divisors (154174680).

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

66169080 is a wasteful number, since it uses less digits than its factorization.

66169080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4541 (or 4534 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 66169080 is about 8134.4379031375. The cubic root of 66169080 is about 404.4688051940.

The spelling of 66169080 in words is "sixty-six million, one hundred sixty-nine thousand, eighty".