82790071 has 16 divisors (see below), whose sum is σ = 102184768. Its totient is φ = 65318400.

The previous prime is 82790063. The next prime is 82790089. The reversal of 82790071 is 17009728.

It is not a de Polignac number, because 82790071 - 2³ = 82790063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82790021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37231 + ... + 39391.

It is an arithmetic number, because the mean of its divisors is an integer number (6386548).

Almost surely, 2^82790071 is an apocalyptic number.

82790071 is a deficient number, since it is larger than the sum of its proper divisors (19394697).

82790071 is a wasteful number, since it uses less digits than its factorization.

82790071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 82790071 is about 9098.9049341116. The cubic root of 82790071 is about 435.8389955560.

Adding to 82790071 its reverse (17009728), we get a palindrome (99799799).

The spelling of 82790071 in words is "eighty-two million, seven hundred ninety thousand, seventy-one".