20676765 has 16 divisors (see below), whose sum is σ = 33853248. Its totient is φ = 10770816.

The previous prime is 20676707. The next prime is 20676781. The reversal of 20676765 is 56767602.

It is not a de Polignac number, because 20676765 - 2⁷ = 20676637 is a prime.

It is a super-2 number, since 2×20676765² = 855057221730450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15384 + ... + 16673.

It is an arithmetic number, because the mean of its divisors is an integer number (2115828).

Almost surely, 2^20676765 is an apocalyptic number.

It is an amenable number.

20676765 is a deficient number, since it is larger than the sum of its proper divisors (13176483).

20676765 is a wasteful number, since it uses less digits than its factorization.

20676765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32108.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 20676765 is about 4547.1710986063. The cubic root of 20676765 is about 274.4695670655.

The spelling of 20676765 in words is "twenty million, six hundred seventy-six thousand, seven hundred sixty-five".