63403013 has 4 divisors (see below), whose sum is σ = 67132620. Its totient is φ = 59673408.

The previous prime is 63403007. The next prime is 63403051. The reversal of 63403013 is 31030436.

63403013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 44930209 + 18472804 = 6703^2 + 4298^2 .

It is a cyclic number.

It is not a de Polignac number, because 63403013 - 2⁶ = 63402949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63403063) 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 in 3 ways as a sum of consecutive naturals, for example, 1864778 + ... + 1864811.

It is an arithmetic number, because the mean of its divisors is an integer number (16783155).

Almost surely, 2^63403013 is an apocalyptic number.

It is an amenable number.

63403013 is a deficient number, since it is larger than the sum of its proper divisors (3729607).

63403013 is a wasteful number, since it uses less digits than its factorization.

63403013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729606.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 63403013 is about 7962.6008941802. The cubic root of 63403013 is about 398.7523898010.

Adding to 63403013 its reverse (31030436), we get a palindrome (94433449).

The spelling of 63403013 in words is "sixty-three million, four hundred three thousand, thirteen".