20793761 has 4 divisors (see below), whose sum is σ = 20952624. Its totient is φ = 20634900.

The previous prime is 20793749. The next prime is 20793781. The reversal of 20793761 is 16739702.

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 20793761 - 2⁶ = 20793697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20793701) 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, 79235 + ... + 79496.

It is an arithmetic number, because the mean of its divisors is an integer number (5238156).

Almost surely, 2^20793761 is an apocalyptic number.

It is an amenable number.

20793761 is a deficient number, since it is larger than the sum of its proper divisors (158863).

20793761 is a wasteful number, since it uses less digits than its factorization.

20793761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158862.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 20793761 is about 4560.0176534746. The cubic root of 20793761 is about 274.9862736950.

The spelling of 20793761 in words is "twenty million, seven hundred ninety-three thousand, seven hundred sixty-one".