86905782 has 12 divisors (see below), whose sum is σ = 188295900. Its totient is φ = 28968588.

The previous prime is 86905781. The next prime is 86905783. The reversal of 86905782 is 28750968.

It is an interprime number because it is at equal distance from previous prime (86905781) and next prime (86905783).

It is a super-2 number, since 2×86905782² = 15105229890063048, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) 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 (86905781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2414032 + ... + 2414067.

It is an arithmetic number, because the mean of its divisors is an integer number (15691325).

Almost surely, 2^86905782 is an apocalyptic number.

86905782 is an abundant number, since it is smaller than the sum of its proper divisors (101390118).

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

86905782 is a wasteful number, since it uses less digits than its factorization.

86905782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828107 (or 4828104 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 86905782 is about 9322.3270699971. The cubic root of 86905782 is about 442.9447486664.

The spelling of 86905782 in words is "eighty-six million, nine hundred five thousand, seven hundred eighty-two".