86156638 has 16 divisors (see below), whose sum is σ = 132192000. Its totient is φ = 42101272.

The previous prime is 86156633. The next prime is 86156639. The reversal of 86156638 is 83665168.

It is a junction number, because it is equal to n+sod(n) for n = 86156594 and 86156603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86156633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19083 + ... + 23161.

It is an arithmetic number, because the mean of its divisors is an integer number (8262000).

Almost surely, 2^86156638 is an apocalyptic number.

86156638 is a deficient number, since it is larger than the sum of its proper divisors (46035362).

86156638 is a wasteful number, since it uses less digits than its factorization.

86156638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319.

The product of its digits is 207360, while the sum is 43.

The square root of 86156638 is about 9282.0600084249. The cubic root of 86156638 is about 441.6683185572.

The spelling of 86156638 in words is "eighty-six million, one hundred fifty-six thousand, six hundred thirty-eight".