63006421 has 2 divisors, whose sum is σ = 63006422. Its totient is φ = 63006420.

The previous prime is 63006409. The next prime is 63006431. The reversal of 63006421 is 12460036.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62583921 + 422500 = 7911^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 63006421 - 2¹⁷ = 62875349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63006392 and 63006401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63006431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31503210 + 31503211.

It is an arithmetic number, because the mean of its divisors is an integer number (31503211).

Almost surely, 2^63006421 is an apocalyptic number.

It is an amenable number.

63006421 is a deficient number, since it is larger than the sum of its proper divisors (1).

63006421 is an equidigital number, since it uses as much as digits as its factorization.

63006421 is an evil number, because the sum of its binary digits is even.

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

The square root of 63006421 is about 7937.6584078682. The cubic root of 63006421 is about 397.9192385983.

Adding to 63006421 its reverse (12460036), we get a palindrome (75466457).

It can be divided in two parts, 6300 and 6421, that added together give a palindrome (12721).

The spelling of 63006421 in words is "sixty-three million, six thousand, four hundred twenty-one".