82689755 has 4 divisors (see below), whose sum is σ = 99227712. Its totient is φ = 66151800.

The previous prime is 82689713. The next prime is 82689757. The reversal of 82689755 is 55798628.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 82689755 - 2²² = 78495451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82689757) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8268971 + ... + 8268980.

It is an arithmetic number, because the mean of its divisors is an integer number (24806928).

Almost surely, 2^82689755 is an apocalyptic number.

82689755 is a deficient number, since it is larger than the sum of its proper divisors (16537957).

82689755 is a wasteful number, since it uses less digits than its factorization.

82689755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16537956.

The product of its digits is 1209600, while the sum is 50.

The square root of 82689755 is about 9093.3907317348. The cubic root of 82689755 is about 435.6628903174.

The spelling of 82689755 in words is "eighty-two million, six hundred eighty-nine thousand, seven hundred fifty-five".