86181378 has 16 divisors (see below), whose sum is σ = 181434720. Its totient is φ = 27215136.

The previous prime is 86181377. The next prime is 86181379. The reversal of 86181378 is 87318168.

It is an interprime number because it is at equal distance from previous prime (86181377) and next prime (86181379).

It is not an unprimeable number, because it can be changed into a prime (86181373) 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, 377875 + ... + 378102.

It is an arithmetic number, because the mean of its divisors is an integer number (11339670).

Almost surely, 2^86181378 is an apocalyptic number.

86181378 is an abundant number, since it is smaller than the sum of its proper divisors (95253342).

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

86181378 is a wasteful number, since it uses less digits than its factorization.

86181378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756001.

The product of its digits is 64512, while the sum is 42.

The square root of 86181378 is about 9283.3925910736. The cubic root of 86181378 is about 441.7105897380.

The spelling of 86181378 in words is "eighty-six million, one hundred eighty-one thousand, three hundred seventy-eight".