86843825 has 6 divisors (see below), whose sum is σ = 107686374. Its totient is φ = 69475040.

The previous prime is 86843821. The next prime is 86843833. The reversal of 86843825 is 52834868.

It can be written as a sum of positive squares in 3 ways, for example, as 64 + 86843761 = 8^2 + 9319^2 .

It is not a de Polignac number, because 86843825 - 2² = 86843821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86843821) 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, 1736852 + ... + 1736901.

It is an arithmetic number, because the mean of its divisors is an integer number (17947729).

Almost surely, 2^86843825 is an apocalyptic number.

It is an amenable number.

86843825 is a deficient number, since it is larger than the sum of its proper divisors (20842549).

86843825 is a wasteful number, since it uses less digits than its factorization.

86843825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473763 (or 3473758 counting only the distinct ones).

The product of its digits is 368640, while the sum is 44.

The square root of 86843825 is about 9319.0034338442. The cubic root of 86843825 is about 442.8394620313.

The spelling of 86843825 in words is "eighty-six million, eight hundred forty-three thousand, eight hundred twenty-five".