86021688 has 16 divisors (see below), whose sum is σ = 215054280. Its totient is φ = 28673888.

The previous prime is 86021669. The next prime is 86021693. The reversal of 86021688 is 88612068.

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, 1792095 + ... + 1792142.

Almost surely, 2^86021688 is an apocalyptic number.

It is an amenable number.

86021688 is an abundant number, since it is smaller than the sum of its proper divisors (129032592).

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

86021688 is a wasteful number, since it uses less digits than its factorization.

86021688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584246 (or 3584242 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 86021688 is about 9274.7877603749. The cubic root of 86021688 is about 441.4375981409.

The spelling of 86021688 in words is "eighty-six million, twenty-one thousand, six hundred eighty-eight".