86705646 has 8 divisors (see below), whose sum is σ = 173411304. Its totient is φ = 28901880.

The previous prime is 86705639. The next prime is 86705651. The reversal of 86705646 is 64650768.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

86705646 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 86705598 and 86705607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7225465 + ... + 7225476.

It is an arithmetic number, because the mean of its divisors is an integer number (21676413).

Almost surely, 2^86705646 is an apocalyptic number.

86705646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

86705646 is a wasteful number, since it uses less digits than its factorization.

86705646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14450946.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 86705646 is about 9311.5866531972. The cubic root of 86705646 is about 442.6044670201.

The spelling of 86705646 in words is "eighty-six million, seven hundred five thousand, six hundred forty-six".