20660466 has 8 divisors (see below), whose sum is σ = 41320944. Its totient is φ = 6886820.

The previous prime is 20660399. The next prime is 20660473. The reversal of 20660466 is 66406602.

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

20660466 is an admirable 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, 1721700 + ... + 1721711.

It is an arithmetic number, because the mean of its divisors is an integer number (5165118).

Almost surely, 2^20660466 is an apocalyptic number.

20660466 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.

20660466 is a wasteful number, since it uses less digits than its factorization.

20660466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443416.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 20660466 is about 4545.3785320917. The cubic root of 20660466 is about 274.3974288392.

The spelling of 20660466 in words is "twenty million, six hundred sixty thousand, four hundred sixty-six".