87248861 has 24 divisors (see below), whose sum is σ = 105058296. Its totient is φ = 72199680.

The previous prime is 87248839. The next prime is 87248869. The reversal of 87248861 is 16884278.

It can be written as a sum of positive squares in 4 ways, for example, as 1223236 + 86025625 = 1106^2 + 9275^2 .

It is not a de Polignac number, because 87248861 - 2²⁶ = 20139997 is a prime.

It is a super-2 number, since 2×87248861² = 15224727491594642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87248869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275075 + ... + 275391.

It is an arithmetic number, because the mean of its divisors is an integer number (4377429).

Almost surely, 2^87248861 is an apocalyptic number.

It is an amenable number.

87248861 is a deficient number, since it is larger than the sum of its proper divisors (17809435).

87248861 is a wasteful number, since it uses less digits than its factorization.

87248861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 502 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 87248861 is about 9340.7098766636. The cubic root of 87248861 is about 443.5268561087.

The spelling of 87248861 in words is "eighty-seven million, two hundred forty-eight thousand, eight hundred sixty-one".