82699261 has 2 divisors, whose sum is σ = 82699262. Its totient is φ = 82699260.

The previous prime is 82699249. The next prime is 82699303. The reversal of 82699261 is 16299628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78659161 + 4040100 = 8869^2 + 2010^2 .

It is a cyclic number.

It is not a de Polignac number, because 82699261 - 2¹⁹ = 82174973 is a prime.

It is a super-2 number, since 2×82699261² = 13678335539892242, which contains 22 as substring.

It is equal to p_4817779 and since 82699261 and 4817779 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 (82699231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41349630 + 41349631.

It is an arithmetic number, because the mean of its divisors is an integer number (41349631).

Almost surely, 2^82699261 is an apocalyptic number.

It is an amenable number.

82699261 is a deficient number, since it is larger than the sum of its proper divisors (1).

82699261 is an equidigital number, since it uses as much as digits as its factorization.

82699261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 82699261 is about 9093.9134040302. The cubic root of 82699261 is about 435.6795842547.

The spelling of 82699261 in words is "eighty-two million, six hundred ninety-nine thousand, two hundred sixty-one".