82715641 has 2 divisors, whose sum is σ = 82715642. Its totient is φ = 82715640.

The previous prime is 82715623. The next prime is 82715651. The reversal of 82715641 is 14651728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46294416 + 36421225 = 6804^2 + 6035^2 .

It is a cyclic number.

It is not a de Polignac number, because 82715641 - 2⁷ = 82715513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82715597 and 82715606.

It is not a weakly prime, because it can be changed into another prime (82715651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41357820 + 41357821.

It is an arithmetic number, because the mean of its divisors is an integer number (41357821).

Almost surely, 2^82715641 is an apocalyptic number.

It is an amenable number.

82715641 is a deficient number, since it is larger than the sum of its proper divisors (1).

82715641 is an equidigital number, since it uses as much as digits as its factorization.

82715641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 34.

The square root of 82715641 is about 9094.8139618136. The cubic root of 82715641 is about 435.7083469481.

The spelling of 82715641 in words is "eighty-two million, seven hundred fifteen thousand, six hundred forty-one".