82681679 has 2 divisors, whose sum is σ = 82681680. Its totient is φ = 82681678.

The previous prime is 82681663. The next prime is 82681691. The reversal of 82681679 is 97618628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82681679 - 2⁴ = 82681663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82681609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41340839 + 41340840.

It is an arithmetic number, because the mean of its divisors is an integer number (41340840).

Almost surely, 2^82681679 is an apocalyptic number.

82681679 is a deficient number, since it is larger than the sum of its proper divisors (1).

82681679 is an equidigital number, since it uses as much as digits as its factorization.

82681679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 82681679 is about 9092.9466621112. The cubic root of 82681679 is about 435.6487066657.

The spelling of 82681679 in words is "eighty-two million, six hundred eighty-one thousand, six hundred seventy-nine".