20765064 has 16 divisors (see below), whose sum is σ = 51912720. Its totient is φ = 6921680.

The previous prime is 20765051. The next prime is 20765077. The reversal of 20765064 is 46056702.

It is an interprime number because it is at equal distance from previous prime (20765051) and next prime (20765077).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432582 + ... + 432629.

It is an arithmetic number, because the mean of its divisors is an integer number (3244545).

Almost surely, 2^20765064 is an apocalyptic number.

20765064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20765064 is an abundant number, since it is smaller than the sum of its proper divisors (31147656).

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

20765064 is a wasteful number, since it uses less digits than its factorization.

20765064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865220 (or 865216 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 20765064 is about 4556.8699783953. The cubic root of 20765064 is about 274.8597146745.

It can be divided in two parts, 2076 and 5064, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 20765064 in words is "twenty million, seven hundred sixty-five thousand, sixty-four".