86361381 has 12 divisors (see below), whose sum is σ = 128768640. Its totient is φ = 55716840.

The previous prime is 86361371. The next prime is 86361383. The reversal of 86361381 is 18316368.

86361381 is a `hidden beast` number, since 8 + 636 + 13 + 8 + 1 = 666.

86361381 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 86361381 - 2¹¹ = 86359333 is a prime.

It is a super-2 number, since 2×86361381² = 14916576256454322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86361383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154491 + ... + 155048.

It is an arithmetic number, because the mean of its divisors is an integer number (10730720).

Almost surely, 2^86361381 is an apocalyptic number.

It is an amenable number.

86361381 is a deficient number, since it is larger than the sum of its proper divisors (42407259).

86361381 is a wasteful number, since it uses less digits than its factorization.

86361381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309576 (or 309573 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 86361381 is about 9293.0824272681. The cubic root of 86361381 is about 442.0179026075.

The spelling of 86361381 in words is "eighty-six million, three hundred sixty-one thousand, three hundred eighty-one".