86421726 has 12 divisors (see below), whose sum is σ = 187247112. Its totient is φ = 28807236.

The previous prime is 86421719. The next prime is 86421743. The reversal of 86421726 is 62712468.

86421726 is a `hidden beast` number, since 8 + 642 + 1 + 7 + 2 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2400586 + ... + 2400621.

It is an arithmetic number, because the mean of its divisors is an integer number (15603926).

Almost surely, 2^86421726 is an apocalyptic number.

86421726 is an abundant number, since it is smaller than the sum of its proper divisors (100825386).

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

86421726 is a wasteful number, since it uses less digits than its factorization.

86421726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4801215 (or 4801212 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 86421726 is about 9296.3286301636. The cubic root of 86421726 is about 442.1208319482.

The spelling of 86421726 in words is "eighty-six million, four hundred twenty-one thousand, seven hundred twenty-six".