63684373 has 4 divisors (see below), whose sum is σ = 64581408. Its totient is φ = 62787340.

The previous prime is 63684359. The next prime is 63684391. The reversal of 63684373 is 37348636.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63684373 - 2¹³ = 63676181 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 (63684353) 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, 448411 + ... + 448552.

It is an arithmetic number, because the mean of its divisors is an integer number (16145352).

Almost surely, 2^63684373 is an apocalyptic number.

It is an amenable number.

63684373 is a deficient number, since it is larger than the sum of its proper divisors (897035).

63684373 is an equidigital number, since it uses as much as digits as its factorization.

63684373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897034.

The product of its digits is 217728, while the sum is 40.

The square root of 63684373 is about 7980.2489309545. The cubic root of 63684373 is about 399.3413598281.

The spelling of 63684373 in words is "sixty-three million, six hundred eighty-four thousand, three hundred seventy-three".