20764063 has 2 divisors, whose sum is σ = 20764064. Its totient is φ = 20764062.

The previous prime is 20764057. The next prime is 20764091. The reversal of 20764063 is 36046702.

It is an a-pointer prime, because the next prime (20764091) can be obtained adding 20764063 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20764063 - 2⁹ = 20763551 is a prime.

It is a super-2 number, since 2×20764063² = 862292624535938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20764763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10382031 + 10382032.

It is an arithmetic number, because the mean of its divisors is an integer number (10382032).

Almost surely, 2^20764063 is an apocalyptic number.

20764063 is a deficient number, since it is larger than the sum of its proper divisors (1).

20764063 is an equidigital number, since it uses as much as digits as its factorization.

20764063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 20764063 is about 4556.7601429086. The cubic root of 20764063 is about 274.8552979774.

The spelling of 20764063 in words is "twenty million, seven hundred sixty-four thousand, sixty-three".