82680087769 has 8 divisors (see below), whose sum is σ = 83107977480. Its totient is φ = 82252281216.

The previous prime is 82680087733. The next prime is 82680087803. The reversal of 82680087769 is 96778008628.

It can be written as a sum of positive squares in 4 ways, for example, as 41079182400 + 41600905369 = 202680^2 + 203963^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82680087769 - 2¹³ = 82680079577 is a prime.

It is a super-2 number, since 2×82680087769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82680087719) 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, 3492637 + ... + 3516229.

It is an arithmetic number, because the mean of its divisors is an integer number (10388497185).

Almost surely, 2^82680087769 is an apocalyptic number.

It is an amenable number.

82680087769 is a deficient number, since it is larger than the sum of its proper divisors (427889711).

82680087769 is a wasteful number, since it uses less digits than its factorization.

82680087769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41579.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 82680087769 in words is "eighty-two billion, six hundred eighty million, eighty-seven thousand, seven hundred sixty-nine".