75368638 has 4 divisors (see below), whose sum is σ = 113052960. Its totient is φ = 37684318.

The previous prime is 75368561. The next prime is 75368641. The reversal of 75368638 is 83686357.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83686357 = 859 ⋅97423.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18842158 + ... + 18842161.

It is an arithmetic number, because the mean of its divisors is an integer number (28263240).

Almost surely, 2^75368638 is an apocalyptic number.

75368638 is a deficient number, since it is larger than the sum of its proper divisors (37684322).

75368638 is a wasteful number, since it uses less digits than its factorization.

75368638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37684321.

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

The square root of 75368638 is about 8681.5112739661. The cubic root of 75368638 is about 422.4061399989.

The spelling of 75368638 in words is "seventy-five million, three hundred sixty-eight thousand, six hundred thirty-eight".