86258778 has 8 divisors (see below), whose sum is σ = 172517568. Its totient is φ = 28752924.

The previous prime is 86258773. The next prime is 86258797. The reversal of 86258778 is 87785268.

It is a sphenic number, since it is the product of 3 distinct primes.

86258778 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86258778.

It is not an unprimeable number, because it can be changed into a prime (86258773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7188226 + ... + 7188237.

It is an arithmetic number, because the mean of its divisors is an integer number (21564696).

Almost surely, 2^86258778 is an apocalyptic number.

86258778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86258778 is a wasteful number, since it uses less digits than its factorization.

86258778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14376468.

The product of its digits is 1505280, while the sum is 51.

The square root of 86258778 is about 9287.5603901132. The cubic root of 86258778 is about 441.8427844596.

The spelling of 86258778 in words is "eighty-six million, two hundred fifty-eight thousand, seven hundred seventy-eight".