82689854 has 16 divisors (see below), whose sum is σ = 133748160. Its totient is φ = 38115360.

The previous prime is 82689833. The next prime is 82689863. The reversal of 82689854 is 45898628.

It is a super-2 number, since 2×82689854² = 13675223909082632, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 25484 + ... + 28544.

It is an arithmetic number, because the mean of its divisors is an integer number (8359260).

Almost surely, 2^82689854 is an apocalyptic number.

82689854 is a deficient number, since it is larger than the sum of its proper divisors (51058306).

82689854 is a wasteful number, since it uses less digits than its factorization.

82689854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115.

The product of its digits is 1105920, while the sum is 50.

The square root of 82689854 is about 9093.3961752472. The cubic root of 82689854 is about 435.6630641826.

It can be divided in two parts, 8 and 2689854, that added together give a palindrome (2689862).

The spelling of 82689854 in words is "eighty-two million, six hundred eighty-nine thousand, eight hundred fifty-four".