63874493 has 4 divisors (see below), whose sum is σ = 64439868. Its totient is φ = 63309120.

The previous prime is 63874483. The next prime is 63874507. The reversal of 63874493 is 39447836.

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 3003289 + 60871204 = 1733^2 + 7802^2 .

It is a cyclic number.

It is not a de Polignac number, because 63874493 - 2¹² = 63870397 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 (63874453) 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, 282518 + ... + 282743.

It is an arithmetic number, because the mean of its divisors is an integer number (16109967).

Almost surely, 2^63874493 is an apocalyptic number.

It is an amenable number.

63874493 is a deficient number, since it is larger than the sum of its proper divisors (565375).

63874493 is a wasteful number, since it uses less digits than its factorization.

63874493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565374.

The product of its digits is 435456, while the sum is 44.

The square root of 63874493 is about 7992.1519630197. The cubic root of 63874493 is about 399.7383559767.

The spelling of 63874493 in words is "sixty-three million, eight hundred seventy-four thousand, four hundred ninety-three".