74063638 has 32 divisors (see below), whose sum is σ = 124233120. Its totient is φ = 32832000.

The previous prime is 74063629. The next prime is 74063663. The reversal of 74063638 is 83636047.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 74063597 and 74063606.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 307198 + ... + 307438.

It is an arithmetic number, because the mean of its divisors is an integer number (3882285).

Almost surely, 2^74063638 is an apocalyptic number.

74063638 is a deficient number, since it is larger than the sum of its proper divisors (50169482).

74063638 is a wasteful number, since it uses less digits than its factorization.

74063638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 74063638 is about 8606.0233557666. The cubic root of 74063638 is about 419.9539594279.

The spelling of 74063638 in words is "seventy-four million, sixty-three thousand, six hundred thirty-eight".