86541623 has 4 divisors (see below), whose sum is σ = 98904720. Its totient is φ = 74178528.

The previous prime is 86541601. The next prime is 86541643. The reversal of 86541623 is 32614568.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86541623 - 2¹⁰ = 86540599 is a prime.

It is a super-2 number, since 2×86541623² = 14978905022948258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86541643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6181538 + ... + 6181551.

It is an arithmetic number, because the mean of its divisors is an integer number (24726180).

Almost surely, 2^86541623 is an apocalyptic number.

86541623 is a deficient number, since it is larger than the sum of its proper divisors (12363097).

86541623 is a wasteful number, since it uses less digits than its factorization.

86541623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12363096.

The product of its digits is 34560, while the sum is 35.

The square root of 86541623 is about 9302.7750160906. The cubic root of 86541623 is about 442.3251959384.

The spelling of 86541623 in words is "eighty-six million, five hundred forty-one thousand, six hundred twenty-three".