20976763 has 2 divisors, whose sum is σ = 20976764. Its totient is φ = 20976762.

The previous prime is 20976751. The next prime is 20976797. The reversal of 20976763 is 36767902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20976763 - 2⁵ = 20976731 is a prime.

It is not a weakly prime, because it can be changed into another prime (20976563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10488381 + 10488382.

It is an arithmetic number, because the mean of its divisors is an integer number (10488382).

Almost surely, 2^20976763 is an apocalyptic number.

20976763 is a deficient number, since it is larger than the sum of its proper divisors (1).

20976763 is an equidigital number, since it uses as much as digits as its factorization.

20976763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 20976763 is about 4580.0396286495. The cubic root of 20976763 is about 275.7906195719.

The spelling of 20976763 in words is "twenty million, nine hundred seventy-six thousand, seven hundred sixty-three".