20066764 has 12 divisors (see below), whose sum is σ = 36643824. Its totient is φ = 9597104.

The previous prime is 20066731. The next prime is 20066771. The reversal of 20066764 is 46766002.

20066764 = T₃₇₂ + T₃₇₃ + ... + T₅₅₅.

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 3 ways as a sum of consecutive naturals, for example, 108967 + ... + 109150.

It is an arithmetic number, because the mean of its divisors is an integer number (3053652).

Almost surely, 2^20066764 is an apocalyptic number.

It is an amenable number.

20066764 is a deficient number, since it is larger than the sum of its proper divisors (16577060).

20066764 is a wasteful number, since it uses less digits than its factorization.

20066764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218144 (or 218142 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 20066764 is about 4479.5941780478. The cubic root of 20066764 is about 271.7434684851.

The spelling of 20066764 in words is "twenty million, sixty-six thousand, seven hundred sixty-four".