82840751 has 4 divisors (see below), whose sum is σ = 94675152. Its totient is φ = 71006352.

The previous prime is 82840739. The next prime is 82840753. The reversal of 82840751 is 15704828.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82840751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82840753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5917190 + ... + 5917203.

It is an arithmetic number, because the mean of its divisors is an integer number (23668788).

Almost surely, 2^82840751 is an apocalyptic number.

82840751 is a deficient number, since it is larger than the sum of its proper divisors (11834401).

82840751 is a wasteful number, since it uses less digits than its factorization.

82840751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11834400.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 82840751 is about 9101.6894585566. The cubic root of 82840751 is about 435.9279104642.

The spelling of 82840751 in words is "eighty-two million, eight hundred forty thousand, seven hundred fifty-one".