86234781 has 8 divisors (see below), whose sum is σ = 115582464. Its totient is φ = 57188480.

The previous prime is 86234779. The next prime is 86234783. The reversal of 86234781 is 18743268.

It is an interprime number because it is at equal distance from previous prime (86234779) and next prime (86234783).

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

It is a cyclic number.

It is not a de Polignac number, because 86234781 - 2¹ = 86234779 is a prime.

It is a super-2 number, since 2×86234781² = 14872874908235922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86234783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74676 + ... + 75821.

It is an arithmetic number, because the mean of its divisors is an integer number (14447808).

Almost surely, 2^86234781 is an apocalyptic number.

It is an amenable number.

86234781 is a deficient number, since it is larger than the sum of its proper divisors (29347683).

86234781 is a wasteful number, since it uses less digits than its factorization.

86234781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150691.

The product of its digits is 64512, while the sum is 39.

The square root of 86234781 is about 9286.2684109388. The cubic root of 86234781 is about 441.8018074332.

The spelling of 86234781 in words is "eighty-six million, two hundred thirty-four thousand, seven hundred eighty-one".