86686425 has 72 divisors (see below), whose sum is σ = 185238144. Its totient is φ = 37889280.

The previous prime is 86686421. The next prime is 86686427. The reversal of 86686425 is 52468668.

It is not a de Polignac number, because 86686425 - 2² = 86686421 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (86686421) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 35029 + ... + 37421.

It is an arithmetic number, because the mean of its divisors is an integer number (2572752).

Almost surely, 2^86686425 is an apocalyptic number.

It is an amenable number.

86686425 is an abundant number, since it is smaller than the sum of its proper divisors (98551719).

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

86686425 is a wasteful number, since it uses less digits than its factorization.

86686425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439 (or 2431 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 86686425 is about 9310.5544947656. The cubic root of 86686425 is about 442.5717589265.

The spelling of 86686425 in words is "eighty-six million, six hundred eighty-six thousand, four hundred twenty-five".