86864161 has 4 divisors (see below), whose sum is σ = 86926212. Its totient is φ = 86802112.

The previous prime is 86864137. The next prime is 86864209. The reversal of 86864161 is 16146868.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36723600 + 50140561 = 6060^2 + 7081^2 .

It is a cyclic number.

It is not a de Polignac number, because 86864161 - 2¹³ = 86855969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86864111) 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, 28876 + ... + 31741.

It is an arithmetic number, because the mean of its divisors is an integer number (21731553).

Almost surely, 2^86864161 is an apocalyptic number.

It is an amenable number.

86864161 is a deficient number, since it is larger than the sum of its proper divisors (62051).

86864161 is a wasteful number, since it uses less digits than its factorization.

86864161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62050.

The product of its digits is 55296, while the sum is 40.

The square root of 86864161 is about 9320.0944737701. The cubic root of 86864161 is about 442.8740255345.

It can be divided in two parts, 86864 and 161, that added together give a square (87025 = 295²).

The spelling of 86864161 in words is "eighty-six million, eight hundred sixty-four thousand, one hundred sixty-one".