86722198 has 4 divisors (see below), whose sum is σ = 130083300. Its totient is φ = 43361098.

The previous prime is 86722193. The next prime is 86722199. The reversal of 86722198 is 89122768.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86722193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21680548 + ... + 21680551.

It is an arithmetic number, because the mean of its divisors is an integer number (32520825).

Almost surely, 2^86722198 is an apocalyptic number.

86722198 is a deficient number, since it is larger than the sum of its proper divisors (43361102).

86722198 is a wasteful number, since it uses less digits than its factorization.

86722198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43361101.

The product of its digits is 96768, while the sum is 43.

The square root of 86722198 is about 9312.4753959407. The cubic root of 86722198 is about 442.6326294423.

The spelling of 86722198 in words is "eighty-six million, seven hundred twenty-two thousand, one hundred ninety-eight".