86528819 has 8 divisors (see below), whose sum is σ = 95458272. Its totient is φ = 77924160.

The previous prime is 86528809. The next prime is 86528851. The reversal of 86528819 is 91882568.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86528819 - 2²⁰ = 85480243 is a prime.

It is a super-2 number, since 2×86528819² = 14974473035069522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86528809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80639 + ... + 81704.

It is an arithmetic number, because the mean of its divisors is an integer number (11932284).

Almost surely, 2^86528819 is an apocalyptic number.

86528819 is a deficient number, since it is larger than the sum of its proper divisors (8929453).

86528819 is a wasteful number, since it uses less digits than its factorization.

86528819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162397.

The product of its digits is 276480, while the sum is 47.

The square root of 86528819 is about 9302.0868088833. The cubic root of 86528819 is about 442.3033805739.

It can be divided in two parts, 8652 and 8819, that added together give a palindrome (17471).

The spelling of 86528819 in words is "eighty-six million, five hundred twenty-eight thousand, eight hundred nineteen".