86861648 has 10 divisors (see below), whose sum is σ = 168294474. Its totient is φ = 43430816.

The previous prime is 86861627. The next prime is 86861683. The reversal of 86861648 is 84616868.

It can be written as a sum of positive squares in only one way, i.e., 86638864 + 222784 = 9308^2 + 472^2 .

It is a congruent number.

It is an unprimeable number.

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, 2714411 + ... + 2714442.

Almost surely, 2^86861648 is an apocalyptic number.

It is an amenable number.

86861648 is a deficient number, since it is larger than the sum of its proper divisors (81432826).

86861648 is a wasteful number, since it uses less digits than its factorization.

86861648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5428861 (or 5428855 counting only the distinct ones).

The product of its digits is 442368, while the sum is 47.

The square root of 86861648 is about 9319.9596565650. The cubic root of 86861648 is about 442.8697546777.

The spelling of 86861648 in words is "eighty-six million, eight hundred sixty-one thousand, six hundred forty-eight".