87682261 has 2 divisors, whose sum is σ = 87682262. Its totient is φ = 87682260.

The previous prime is 87682247. The next prime is 87682303. The reversal of 87682261 is 16228678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67486225 + 20196036 = 8215^2 + 4494^2 .

It is a cyclic number.

It is not a de Polignac number, because 87682261 - 2¹¹ = 87680213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87682211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43841130 + 43841131.

It is an arithmetic number, because the mean of its divisors is an integer number (43841131).

Almost surely, 2^87682261 is an apocalyptic number.

It is an amenable number.

87682261 is a deficient number, since it is larger than the sum of its proper divisors (1).

87682261 is an equidigital number, since it uses as much as digits as its factorization.

87682261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The square root of 87682261 is about 9363.8806592139. The cubic root of 87682261 is about 444.2600352292.

The spelling of 87682261 in words is "eighty-seven million, six hundred eighty-two thousand, two hundred sixty-one".