20066767 has 16 divisors (see below), whose sum is σ = 23668480. Its totient is φ = 16656192.

The previous prime is 20066731. The next prime is 20066771. The reversal of 20066767 is 76766002.

It is not a de Polignac number, because 20066767 - 2⁷ = 20066639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48859 + ... + 49267.

It is an arithmetic number, because the mean of its divisors is an integer number (1479280).

Almost surely, 2^20066767 is an apocalyptic number.

20066767 is a deficient number, since it is larger than the sum of its proper divisors (3601713).

20066767 is a wasteful number, since it uses less digits than its factorization.

20066767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 20066767 is about 4479.5945128996. The cubic root of 20066767 is about 271.7434820271.

The spelling of 20066767 in words is "twenty million, sixty-six thousand, seven hundred sixty-seven".