82715807 has 2 divisors, whose sum is σ = 82715808. Its totient is φ = 82715806.

The previous prime is 82715777. The next prime is 82715813. The reversal of 82715807 is 70851728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82715807 - 2⁸ = 82715551 is a prime.

It is a super-2 number, since 2×82715807² = 13683809455322498, which contains 22 as substring.

It is equal to p_4818683 and since 82715807 and 4818683 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82715407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41357903 + 41357904.

It is an arithmetic number, because the mean of its divisors is an integer number (41357904).

Almost surely, 2^82715807 is an apocalyptic number.

82715807 is a deficient number, since it is larger than the sum of its proper divisors (1).

82715807 is an equidigital number, since it uses as much as digits as its factorization.

82715807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 82715807 is about 9094.8230878891. The cubic root of 82715807 is about 435.7086384188.

The spelling of 82715807 in words is "eighty-two million, seven hundred fifteen thousand, eight hundred seven".