20763713 has 4 divisors (see below), whose sum is σ = 21856560. Its totient is φ = 19670868.

The previous prime is 20763709. The next prime is 20763719. The reversal of 20763713 is 31736702.

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 20763713 - 2² = 20763709 is a prime.

It is a super-2 number, since 2×20763713² = 862263555092738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20763719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546395 + ... + 546432.

It is an arithmetic number, because the mean of its divisors is an integer number (5464140).

Almost surely, 2^20763713 is an apocalyptic number.

It is an amenable number.

20763713 is a deficient number, since it is larger than the sum of its proper divisors (1092847).

20763713 is a wasteful number, since it uses less digits than its factorization.

20763713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092846.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 20763713 is about 4556.7217382675. The cubic root of 20763713 is about 274.8537536442.

The spelling of 20763713 in words is "twenty million, seven hundred sixty-three thousand, seven hundred thirteen".