86781026 has 8 divisors (see below), whose sum is σ = 131819520. Its totient is φ = 42841188.

The previous prime is 86781011. The next prime is 86781029. The reversal of 86781026 is 62018768.

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

It is a super-2 number, since 2×86781026² = 15061892947225352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86781029) 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, 274466 + ... + 274781.

It is an arithmetic number, because the mean of its divisors is an integer number (16477440).

Almost surely, 2^86781026 is an apocalyptic number.

86781026 is a deficient number, since it is larger than the sum of its proper divisors (45038494).

86781026 is a wasteful number, since it uses less digits than its factorization.

86781026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549328.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 86781026 is about 9315.6334191508. The cubic root of 86781026 is about 442.7326934291.

The spelling of 86781026 in words is "eighty-six million, seven hundred eighty-one thousand, twenty-six".