20763047 has 2 divisors, whose sum is σ = 20763048. Its totient is φ = 20763046.

The previous prime is 20763019. The next prime is 20763091. The reversal of 20763047 is 74036702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20763047 - 2¹⁰ = 20762023 is a prime.

It is a super-2 number, since 2×20763047² = 862208241448418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20763007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10381523 + 10381524.

It is an arithmetic number, because the mean of its divisors is an integer number (10381524).

Almost surely, 2^20763047 is an apocalyptic number.

20763047 is a deficient number, since it is larger than the sum of its proper divisors (1).

20763047 is an equidigital number, since it uses as much as digits as its factorization.

20763047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 20763047 is about 4556.6486588281. The cubic root of 20763047 is about 274.8508149508.

Adding to 20763047 its reverse (74036702), we get a palindrome (94799749).

The spelling of 20763047 in words is "twenty million, seven hundred sixty-three thousand, forty-seven".