20246666 has 16 divisors (see below), whose sum is σ = 34875360. Its totient is φ = 8718480.

The previous prime is 20246657. The next prime is 20246683. The reversal of 20246666 is 66664202.

20246666 is a modest number, since divided by 6666 gives 2024 as remainder.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23801 + ... + 24636.

It is an arithmetic number, because the mean of its divisors is an integer number (2179710).

Almost surely, 2^20246666 is an apocalyptic number.

20246666 is a deficient number, since it is larger than the sum of its proper divisors (14628694).

20246666 is a wasteful number, since it uses less digits than its factorization.

20246666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48469.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 20246666 is about 4499.6295403066. The cubic root of 20246666 is about 272.5531293876.

The spelling of 20246666 in words is "twenty million, two hundred forty-six thousand, six hundred sixty-six".