20670763 has 2 divisors, whose sum is σ = 20670764. Its totient is φ = 20670762.

The previous prime is 20670757. The next prime is 20670817. The reversal of 20670763 is 36707602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20670763 - 2⁵ = 20670731 is a prime.

It is not a weakly prime, because it can be changed into another prime (20670163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10335381 + 10335382.

It is an arithmetic number, because the mean of its divisors is an integer number (10335382).

Almost surely, 2^20670763 is an apocalyptic number.

20670763 is a deficient number, since it is larger than the sum of its proper divisors (1).

20670763 is an equidigital number, since it uses as much as digits as its factorization.

20670763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 20670763 is about 4546.5110799381. The cubic root of 20670763 is about 274.4430070473.

The spelling of 20670763 in words is "twenty million, six hundred seventy thousand, seven hundred sixty-three".