86689647 has 48 divisors (see below), whose sum is σ = 152305920. Its totient is φ = 46828800.

The previous prime is 86689639. The next prime is 86689657. The reversal of 86689647 is 74698668.

It is not a de Polignac number, because 86689647 - 2³ = 86689639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86689593 and 86689602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86689657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30622 + ... + 33332.

It is an arithmetic number, because the mean of its divisors is an integer number (3173040).

Almost surely, 2^86689647 is an apocalyptic number.

86689647 is a deficient number, since it is larger than the sum of its proper divisors (65616273).

86689647 is a wasteful number, since it uses less digits than its factorization.

86689647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764 (or 2761 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 86689647 is about 9310.7275225946. The cubic root of 86689647 is about 442.5772420939.

The spelling of 86689647 in words is "eighty-six million, six hundred eighty-nine thousand, six hundred forty-seven".