87338261 has 2 divisors, whose sum is σ = 87338262. Its totient is φ = 87338260.

The previous prime is 87338257. The next prime is 87338341. The reversal of 87338261 is 16283378.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49084036 + 38254225 = 7006^2 + 6185^2 .

It is a cyclic number.

It is not a de Polignac number, because 87338261 - 2² = 87338257 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 (87338221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43669130 + 43669131.

It is an arithmetic number, because the mean of its divisors is an integer number (43669131).

Almost surely, 2^87338261 is an apocalyptic number.

It is an amenable number.

87338261 is a deficient number, since it is larger than the sum of its proper divisors (1).

87338261 is an equidigital number, since it uses as much as digits as its factorization.

87338261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 87338261 is about 9345.4941549391. The cubic root of 87338261 is about 443.6782917654.

The spelling of 87338261 in words is "eighty-seven million, three hundred thirty-eight thousand, two hundred sixty-one".