20764033 has 4 divisors (see below), whose sum is σ = 20790448. Its totient is φ = 20737620.

The previous prime is 20763991. The next prime is 20764039. The reversal of 20764033 is 33046702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20764033 - 2¹³ = 20755841 is a prime.

It is a super-2 number, since 2×20764033² = 862290132850178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20763989 and 20764007.

It is not an unprimeable number, because it can be changed into a prime (20764039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11991 + ... + 13612.

It is an arithmetic number, because the mean of its divisors is an integer number (5197612).

Almost surely, 2^20764033 is an apocalyptic number.

It is an amenable number.

20764033 is a deficient number, since it is larger than the sum of its proper divisors (26415).

20764033 is an equidigital number, since it uses as much as digits as its factorization.

20764033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26414.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 20764033 is about 4556.7568510949. The cubic root of 20764033 is about 274.8551656067.

The spelling of 20764033 in words is "twenty million, seven hundred sixty-four thousand, thirty-three".