63433421 has 4 divisors (see below), whose sum is σ = 64630332. Its totient is φ = 62236512.

The previous prime is 63433417. The next prime is 63433427. The reversal of 63433421 is 12433436.

It is a happy number.

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 33512521 + 29920900 = 5789^2 + 5470^2 .

It is a cyclic number.

It is not a de Polignac number, because 63433421 - 2² = 63433417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63433427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598376 + ... + 598481.

It is an arithmetic number, because the mean of its divisors is an integer number (16157583).

Almost surely, 2^63433421 is an apocalyptic number.

It is an amenable number.

63433421 is a deficient number, since it is larger than the sum of its proper divisors (1196911).

63433421 is a wasteful number, since it uses less digits than its factorization.

63433421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196910.

The product of its digits is 5184, while the sum is 26.

The square root of 63433421 is about 7964.5100916503. The cubic root of 63433421 is about 398.8161266499.

Adding to 63433421 its reverse (12433436), we get a palindrome (75866857).

The spelling of 63433421 in words is "sixty-three million, four hundred thirty-three thousand, four hundred twenty-one".