82802681 has 8 divisors (see below), whose sum is σ = 90634824. Its totient is φ = 75179520.

The previous prime is 82802677. The next prime is 82802689. The reversal of 82802681 is 18620828.

It can be written as a sum of positive squares in 4 ways, for example, as 6677056 + 76125625 = 2584^2 + 8725^2 .

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

It is not a de Polignac number, because 82802681 - 2² = 82802677 is a prime.

It is a super-2 number, since 2×82802681² = 13712567961575522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82802689) 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, 51416 + ... + 53001.

It is an arithmetic number, because the mean of its divisors is an integer number (11329353).

Almost surely, 2^82802681 is an apocalyptic number.

It is an amenable number.

82802681 is a deficient number, since it is larger than the sum of its proper divisors (7832143).

82802681 is a wasteful number, since it uses less digits than its factorization.

82802681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104491.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 82802681 is about 9099.5978482568. The cubic root of 82802681 is about 435.8611224071.

The spelling of 82802681 in words is "eighty-two million, eight hundred two thousand, six hundred eighty-one".