75683638 has 4 divisors (see below), whose sum is σ = 113525460. Its totient is φ = 37841818.

The previous prime is 75683627. The next prime is 75683653. The reversal of 75683638 is 83638657.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83638657 = 17 ⋅4919921.

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 as a sum of consecutive naturals, namely, 18920908 + ... + 18920911.

It is an arithmetic number, because the mean of its divisors is an integer number (28381365).

Almost surely, 2^75683638 is an apocalyptic number.

75683638 is a deficient number, since it is larger than the sum of its proper divisors (37841822).

75683638 is a wasteful number, since it uses less digits than its factorization.

75683638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37841821.

The product of its digits is 725760, while the sum is 46.

The square root of 75683638 is about 8699.6343601326. The cubic root of 75683638 is about 422.9937981941.

The spelling of 75683638 in words is "seventy-five million, six hundred eighty-three thousand, six hundred thirty-eight".