82689618 has 16 divisors (see below), whose sum is σ = 180413856. Its totient is φ = 25057440.

The previous prime is 82689611. The next prime is 82689631. The reversal of 82689618 is 81698628.

It is not an unprimeable number, because it can be changed into a prime (82689611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626371 + ... + 626502.

It is an arithmetic number, because the mean of its divisors is an integer number (11275866).

Almost surely, 2^82689618 is an apocalyptic number.

82689618 is an abundant number, since it is smaller than the sum of its proper divisors (97724238).

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

82689618 is a wasteful number, since it uses less digits than its factorization.

82689618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252889.

The product of its digits is 331776, while the sum is 48.

The square root of 82689618 is about 9093.3831987880. The cubic root of 82689618 is about 435.6626497159.

The spelling of 82689618 in words is "eighty-two million, six hundred eighty-nine thousand, six hundred eighteen".