20976359 has 2 divisors, whose sum is σ = 20976360. Its totient is φ = 20976358.

The previous prime is 20976353. The next prime is 20976377. The reversal of 20976359 is 95367902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20976359 - 2⁴ = 20976343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20976353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10488179 + 10488180.

It is an arithmetic number, because the mean of its divisors is an integer number (10488180).

Almost surely, 2^20976359 is an apocalyptic number.

20976359 is a deficient number, since it is larger than the sum of its proper divisors (1).

20976359 is an equidigital number, since it uses as much as digits as its factorization.

20976359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 20976359 is about 4579.9955240153. The cubic root of 20976359 is about 275.7888490393.

Adding to 20976359 its sum of digits (41), we get a square (20976400 = 4580²).

The spelling of 20976359 in words is "twenty million, nine hundred seventy-six thousand, three hundred fifty-nine".