20764075 has 12 divisors (see below), whose sum is σ = 26234928. Its totient is φ = 16296800.

The previous prime is 20764063. The next prime is 20764091. The reversal of 20764075 is 57046702.

It is not a de Polignac number, because 20764075 - 2¹⁵ = 20731307 is a prime.

It is a super-2 number, since 2×20764075² = 862293621211250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6511 + ... + 9160.

It is an arithmetic number, because the mean of its divisors is an integer number (2186244).

Almost surely, 2^20764075 is an apocalyptic number.

20764075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20764075 is a deficient number, since it is larger than the sum of its proper divisors (5470853).

20764075 is a wasteful number, since it uses less digits than its factorization.

20764075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15734 (or 15729 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 20764075 is about 4556.7614596334. The cubic root of 20764075 is about 274.8553509257.

The spelling of 20764075 in words is "twenty million, seven hundred sixty-four thousand, seventy-five".