86646425 has 6 divisors (see below), whose sum is σ = 107441598. Its totient is φ = 69317120.

The previous prime is 86646421. The next prime is 86646449. The reversal of 86646425 is 52464668.

It can be written as a sum of positive squares in 3 ways, for example, as 583696 + 86062729 = 764^2 + 9277^2 .

It is not a de Polignac number, because 86646425 - 2² = 86646421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86646421) 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 5 ways as a sum of consecutive naturals, for example, 1732904 + ... + 1732953.

It is an arithmetic number, because the mean of its divisors is an integer number (17906933).

Almost surely, 2^86646425 is an apocalyptic number.

It is an amenable number.

86646425 is a deficient number, since it is larger than the sum of its proper divisors (20795173).

86646425 is a wasteful number, since it uses less digits than its factorization.

86646425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465867 (or 3465862 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 86646425 is about 9308.4061471339. The cubic root of 86646425 is about 442.5036760098.

The spelling of 86646425 in words is "eighty-six million, six hundred forty-six thousand, four hundred twenty-five".