21466085 has 8 divisors (see below), whose sum is σ = 25882656. Its totient is φ = 17090640.

The previous prime is 21466079. The next prime is 21466091. The reversal of 21466085 is 58066412.

It is an interprime number because it is at equal distance from previous prime (21466079) and next prime (21466091).

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

It is not a de Polignac number, because 21466085 - 2⁶ = 21466021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9119 + ... + 11228.

It is an arithmetic number, because the mean of its divisors is an integer number (3235332).

Almost surely, 2^21466085 is an apocalyptic number.

It is an amenable number.

21466085 is a deficient number, since it is larger than the sum of its proper divisors (4416571).

21466085 is a wasteful number, since it uses less digits than its factorization.

21466085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20563.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 21466085 is about 4633.1506558712. The cubic root of 21466085 is about 277.9186009809.

The spelling of 21466085 in words is "twenty-one million, four hundred sixty-six thousand, eighty-five".