90860038686 has 64 divisors (see below), whose sum is σ = 214640616960. Its totient is φ = 28391472000.

The previous prime is 90860038673. The next prime is 90860038697. The reversal of 90860038686 is 68683006809.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33255 + ... + 427581.

It is an arithmetic number, because the mean of its divisors is an integer number (3353759640).

Almost surely, 2^90860038686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90860038686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107320308480).

90860038686 is an abundant number, since it is smaller than the sum of its proper divisors (123780578274).

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

90860038686 is a wasteful number, since it uses less digits than its factorization.

90860038686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394606 (or 394600 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 90860038686 in words is "ninety billion, eight hundred sixty million, thirty-eight thousand, six hundred eighty-six".