82689387606 has 48 divisors (see below), whose sum is σ = 207221624064. Its totient is φ = 23340891312.

The previous prime is 82689387563. The next prime is 82689387619. The reversal of 82689387606 is 60678398628.

It is a super-2 number, since 2×82689387606² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

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, 3942946 + ... + 3963861.

It is an arithmetic number, because the mean of its divisors is an integer number (4317117168).

Almost surely, 2^82689387606 is an apocalyptic number.

82689387606 is an abundant number, since it is smaller than the sum of its proper divisors (124532236458).

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

82689387606 is a wasteful number, since it uses less digits than its factorization.

82689387606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7906905 (or 7906902 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 82689387606 in words is "eighty-two billion, six hundred eighty-nine million, three hundred eighty-seven thousand, six hundred six".