82702661 has 2 divisors, whose sum is σ = 82702662. Its totient is φ = 82702660.

The previous prime is 82702597. The next prime is 82702673. The reversal of 82702661 is 16620728.

82702661 = 6430² + 6431².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41357761 + 41344900 = 6431^2 + 6430^2 .

It is a cyclic number.

It is not a de Polignac number, because 82702661 - 2⁶ = 82702597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82702681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41351330 + 41351331.

It is an arithmetic number, because the mean of its divisors is an integer number (41351331).

Almost surely, 2^82702661 is an apocalyptic number.

82702661 is the 6431-st centered square number.

It is an amenable number.

82702661 is a deficient number, since it is larger than the sum of its proper divisors (1).

82702661 is an equidigital number, since it uses as much as digits as its factorization.

82702661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 82702661 is about 9094.1003403305. The cubic root of 82702661 is about 435.6855548453.

The spelling of 82702661 in words is "eighty-two million, seven hundred two thousand, six hundred sixty-one".