86905331 has 4 divisors (see below), whose sum is σ = 86948064. Its totient is φ = 86862600.

The previous prime is 86905277. The next prime is 86905393. The reversal of 86905331 is 13350968.

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 86905331 - 2¹⁸ = 86643187 is a prime.

It is a super-2 number, since 2×86905331² = 15105073112439122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86905291 and 86905300.

It is not an unprimeable number, because it can be changed into a prime (86965331) 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, 18155 + ... + 22436.

It is an arithmetic number, because the mean of its divisors is an integer number (21737016).

Almost surely, 2^86905331 is an apocalyptic number.

86905331 is a deficient number, since it is larger than the sum of its proper divisors (42733).

86905331 is a wasteful number, since it uses less digits than its factorization.

86905331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42732.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 86905331 is about 9322.3028807264. The cubic root of 86905331 is about 442.9439824404.

The spelling of 86905331 in words is "eighty-six million, nine hundred five thousand, three hundred thirty-one".