86831745 has 64 divisors (see below), whose sum is σ = 186568704. Its totient is φ = 33304320.

The previous prime is 86831743. The next prime is 86831747. The reversal of 86831745 is 54713868.

It is an interprime number because it is at equal distance from previous prime (86831743) and next prime (86831747).

It is not a de Polignac number, because 86831745 - 2¹ = 86831743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86831697 and 86831706.

It is not an unprimeable number, because it can be changed into a prime (86831743) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12124 + ... + 17906.

It is an arithmetic number, because the mean of its divisors is an integer number (2915136).

Almost surely, 2^86831745 is an apocalyptic number.

It is an amenable number.

86831745 is an abundant number, since it is smaller than the sum of its proper divisors (99736959).

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

86831745 is a wasteful number, since it uses less digits than its factorization.

86831745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5822.

The product of its digits is 161280, while the sum is 42.

The square root of 86831745 is about 9318.3552733302. The cubic root of 86831745 is about 442.8189280488.

The spelling of 86831745 in words is "eighty-six million, eight hundred thirty-one thousand, seven hundred forty-five".