86538123 has 24 divisors (see below), whose sum is σ = 143121888. Its totient is φ = 49358592.

The previous prime is 86538119. The next prime is 86538161. The reversal of 86538123 is 32183568.

It is not a de Polignac number, because 86538123 - 2² = 86538119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86538163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47811 + ... + 49587.

It is an arithmetic number, because the mean of its divisors is an integer number (5963412).

Almost surely, 2^86538123 is an apocalyptic number.

86538123 is a deficient number, since it is larger than the sum of its proper divisors (56583765).

86538123 is a wasteful number, since it uses less digits than its factorization.

86538123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563 (or 2560 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 86538123 is about 9302.5868982773. The cubic root of 86538123 is about 442.3192328769.

The spelling of 86538123 in words is "eighty-six million, five hundred thirty-eight thousand, one hundred twenty-three".