75381634 has 4 divisors (see below), whose sum is σ = 113072454. Its totient is φ = 37690816.

The previous prime is 75381619. The next prime is 75381637. The reversal of 75381634 is 43618357.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43618357 = 19 ⋅2295703.

It can be written as a sum of positive squares in only one way, i.e., 66471409 + 8910225 = 8153^2 + 2985^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75381593 and 75381602.

It is not an unprimeable number, because it can be changed into a prime (75381637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18845407 + ... + 18845410.

Almost surely, 2^75381634 is an apocalyptic number.

75381634 is a deficient number, since it is larger than the sum of its proper divisors (37690820).

75381634 is a wasteful number, since it uses less digits than its factorization.

75381634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37690819.

The product of its digits is 60480, while the sum is 37.

The square root of 75381634 is about 8682.2597288955. The cubic root of 75381634 is about 422.4304174475.

The spelling of 75381634 in words is "seventy-five million, three hundred eighty-one thousand, six hundred thirty-four".