86668421 has 8 divisors (see below), whose sum is σ = 99806784. Its totient is φ = 73719360.

The previous prime is 86668391. The next prime is 86668427. The reversal of 86668421 is 12486668.

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

It is a cyclic number.

It is not a de Polignac number, because 86668421 - 2⁶ = 86668357 is a prime.

It is a super-2 number, since 2×86668421² = 15022830397266482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86668427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46340 + ... + 48173.

It is an arithmetic number, because the mean of its divisors is an integer number (12475848).

Almost surely, 2^86668421 is an apocalyptic number.

It is an amenable number.

86668421 is a deficient number, since it is larger than the sum of its proper divisors (13138363).

86668421 is a wasteful number, since it uses less digits than its factorization.

86668421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94651.

The product of its digits is 110592, while the sum is 41.

The square root of 86668421 is about 9309.5875848504. The cubic root of 86668421 is about 442.5411173981.

The spelling of 86668421 in words is "eighty-six million, six hundred sixty-eight thousand, four hundred twenty-one".