63361421 has 4 divisors (see below), whose sum is σ = 63386844. Its totient is φ = 63336000.

The previous prime is 63361411. The next prime is 63361439. The reversal of 63361421 is 12416336.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50836900 + 12524521 = 7130^2 + 3539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63361421 is a prime.

It is a super-2 number, since 2×63361421² = 8029339342278482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63361411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8510 + ... + 14111.

It is an arithmetic number, because the mean of its divisors is an integer number (15846711).

Almost surely, 2^63361421 is an apocalyptic number.

It is an amenable number.

63361421 is a deficient number, since it is larger than the sum of its proper divisors (25423).

63361421 is a wasteful number, since it uses less digits than its factorization.

63361421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25422.

The product of its digits is 2592, while the sum is 26.

The square root of 63361421 is about 7959.9887562735. The cubic root of 63361421 is about 398.6651776615.

Adding to 63361421 its reverse (12416336), we get a palindrome (75777757).

The spelling of 63361421 in words is "sixty-three million, three hundred sixty-one thousand, four hundred twenty-one".