20066648 has 32 divisors (see below), whose sum is σ = 43817760. Its totient is φ = 8436480.

The previous prime is 20066639. The next prime is 20066687. The reversal of 20066648 is 84666002.

It is a happy 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, 413 + ... + 6348.

It is an arithmetic number, because the mean of its divisors is an integer number (1369305).

Almost surely, 2^20066648 is an apocalyptic number.

20066648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20066648 is an abundant number, since it is smaller than the sum of its proper divisors (23751112).

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

20066648 is a wasteful number, since it uses less digits than its factorization.

20066648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6827 (or 6823 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 20066648 is about 4479.5812304277. The cubic root of 20066648 is about 271.7429448614.

The spelling of 20066648 in words is "twenty million, sixty-six thousand, six hundred forty-eight".