20763793 has 4 divisors (see below), whose sum is σ = 20774128. Its totient is φ = 20753460.

The previous prime is 20763781. The next prime is 20763823. The reversal of 20763793 is 39736702.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39736702 = 2 ⋅19868351.

It is a cyclic number.

It is not a de Polignac number, because 20763793 - 2⁵ = 20763761 is a prime.

It is a super-2 number, since 2×20763793² = 862270199493698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20763763) 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, 1071 + ... + 6532.

It is an arithmetic number, because the mean of its divisors is an integer number (5193532).

Almost surely, 2^20763793 is an apocalyptic number.

It is an amenable number.

20763793 is a deficient number, since it is larger than the sum of its proper divisors (10335).

20763793 is an equidigital number, since it uses as much as digits as its factorization.

20763793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10334.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 20763793 is about 4556.7305164997. The cubic root of 20763793 is about 274.8541066362.

It can be divided in two parts, 207 and 63793, that added together give a cube (64000 = 40³).

The spelling of 20763793 in words is "twenty million, seven hundred sixty-three thousand, seven hundred ninety-three".