86668249 has 4 divisors (see below), whose sum is σ = 86950864. Its totient is φ = 86385636.

The previous prime is 86668247. The next prime is 86668259. The reversal of 86668249 is 94286668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86668249 - 2¹ = 86668247 is a prime.

It is a super-2 number, since 2×86668249² = 15022770769452002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86668243) 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, 140847 + ... + 141460.

It is an arithmetic number, because the mean of its divisors is an integer number (21737716).

Almost surely, 2^86668249 is an apocalyptic number.

It is an amenable number.

86668249 is a deficient number, since it is larger than the sum of its proper divisors (282615).

86668249 is a wasteful number, since it uses less digits than its factorization.

86668249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282614.

The product of its digits is 995328, while the sum is 49.

The square root of 86668249 is about 9309.5783470574. The cubic root of 86668249 is about 442.5408246459.

The spelling of 86668249 in words is "eighty-six million, six hundred sixty-eight thousand, two hundred forty-nine".