87266273 has 2 divisors, whose sum is σ = 87266274. Its totient is φ = 87266272.

The previous prime is 87266269. The next prime is 87266299. The reversal of 87266273 is 37266278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43930384 + 43335889 = 6628^2 + 6583^2 .

It is a cyclic number.

It is not a de Polignac number, because 87266273 - 2² = 87266269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87266273.

It is not a weakly prime, because it can be changed into another prime (87266233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43633136 + 43633137.

It is an arithmetic number, because the mean of its divisors is an integer number (43633137).

Almost surely, 2^87266273 is an apocalyptic number.

It is an amenable number.

87266273 is a deficient number, since it is larger than the sum of its proper divisors (1).

87266273 is an equidigital number, since it uses as much as digits as its factorization.

87266273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 87266273 is about 9341.6418792416. The cubic root of 87266273 is about 443.5563585987.

The spelling of 87266273 in words is "eighty-seven million, two hundred sixty-six thousand, two hundred seventy-three".