63753421 has 4 divisors (see below), whose sum is σ = 63794844. Its totient is φ = 63712000.

The previous prime is 63753409. The next prime is 63753427. The reversal of 63753421 is 12435736.

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 56836521 + 6916900 = 7539^2 + 2630^2 .

It is a cyclic number.

It is not a de Polignac number, because 63753421 - 2²⁵ = 30198989 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63753427) 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, 18310 + ... + 21511.

It is an arithmetic number, because the mean of its divisors is an integer number (15948711).

Almost surely, 2^63753421 is an apocalyptic number.

It is an amenable number.

63753421 is a deficient number, since it is larger than the sum of its proper divisors (41423).

63753421 is a wasteful number, since it uses less digits than its factorization.

63753421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41422.

The product of its digits is 15120, while the sum is 31.

The square root of 63753421 is about 7984.5739397917. The cubic root of 63753421 is about 399.4856325990.

The spelling of 63753421 in words is "sixty-three million, seven hundred fifty-three thousand, four hundred twenty-one".