86649833 has 4 divisors (see below), whose sum is σ = 91746900. Its totient is φ = 81552768.

The previous prime is 86649803. The next prime is 86649839. The reversal of 86649833 is 33894668.

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 68773849 + 17875984 = 8293^2 + 4228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86649833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (86649839) 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, 2548508 + ... + 2548541.

It is an arithmetic number, because the mean of its divisors is an integer number (22936725).

Almost surely, 2^86649833 is an apocalyptic number.

It is an amenable number.

86649833 is a deficient number, since it is larger than the sum of its proper divisors (5097067).

86649833 is a wasteful number, since it uses less digits than its factorization.

86649833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097066.

The product of its digits is 746496, while the sum is 47.

The square root of 86649833 is about 9308.5892056745. The cubic root of 86649833 is about 442.5094774907.

The spelling of 86649833 in words is "eighty-six million, six hundred forty-nine thousand, eight hundred thirty-three".