86911641 has 24 divisors (see below), whose sum is σ = 133164096. Its totient is φ = 54505440.

The previous prime is 86911639. The next prime is 86911673. The reversal of 86911641 is 14611968.

It is a happy number.

86911641 is a `hidden beast` number, since 8 + 6 + 9 + 1 + 1 + 641 = 666.

It is not a de Polignac number, because 86911641 - 2¹ = 86911639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86911596 and 86911605.

It is not an unprimeable number, because it can be changed into a prime (86911621) 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 in 23 ways as a sum of consecutive naturals, for example, 9186 + ... + 16068.

It is an arithmetic number, because the mean of its divisors is an integer number (5548504).

Almost surely, 2^86911641 is an apocalyptic number.

It is an amenable number.

86911641 is a deficient number, since it is larger than the sum of its proper divisors (46252455).

86911641 is a wasteful number, since it uses less digits than its factorization.

86911641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973 (or 6970 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 86911641 is about 9322.6413102725. The cubic root of 86911641 is about 442.9547025686.

The spelling of 86911641 in words is "eighty-six million, nine hundred eleven thousand, six hundred forty-one".