82169660 has 12 divisors (see below), whose sum is σ = 172556328. Its totient is φ = 32867856.

The previous prime is 82169641. The next prime is 82169683. The reversal of 82169660 is 6696128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2054222 + ... + 2054261.

It is an arithmetic number, because the mean of its divisors is an integer number (14379694).

Almost surely, 2^82169660 is an apocalyptic number.

It is an amenable number.

82169660 is an abundant number, since it is smaller than the sum of its proper divisors (90386668).

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

82169660 is a wasteful number, since it uses less digits than its factorization.

82169660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4108492 (or 4108490 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 82169660 is about 9064.7482038940. The cubic root of 82169660 is about 434.7475701068.

The spelling of 82169660 in words is "eighty-two million, one hundred sixty-nine thousand, six hundred sixty".