63460021 has 2 divisors, whose sum is σ = 63460022. Its totient is φ = 63460020.

The previous prime is 63459973. The next prime is 63460043. The reversal of 63460021 is 12006436.

63460021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (63460043) can be obtained adding 63460021 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51279921 + 12180100 = 7161^2 + 3490^2 .

It is a cyclic number.

It is not a de Polignac number, because 63460021 - 2¹⁷ = 63328949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63459974 and 63460001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63460081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31730010 + 31730011.

It is an arithmetic number, because the mean of its divisors is an integer number (31730011).

Almost surely, 2^63460021 is an apocalyptic number.

It is an amenable number.

63460021 is a deficient number, since it is larger than the sum of its proper divisors (1).

63460021 is an equidigital number, since it uses as much as digits as its factorization.

63460021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 63460021 is about 7966.1798247341. The cubic root of 63460021 is about 398.8718650198.

Adding to 63460021 its reverse (12006436), we get a palindrome (75466457).

The spelling of 63460021 in words is "sixty-three million, four hundred sixty thousand, twenty-one".