745838 has 8 divisors (see below), whose sum is σ = 1132488. Its totient is φ = 368344.

The previous prime is 745837. The next prime is 745859. The reversal of 745838 is 838547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 745798 and 745807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2081 + ... + 2412.

It is an arithmetic number, because the mean of its divisors is an integer number (141561).

2⁷⁴⁵⁸³⁸ is an apocalyptic number.

745838 is a deficient number, since it is larger than the sum of its proper divisors (386650).

745838 is a wasteful number, since it uses less digits than its factorization.

745838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578.

The product of its digits is 26880, while the sum is 35.

The square root of 745838 is about 863.6191290146. The cubic root of 745838 is about 90.6876543349.

The spelling of 745838 in words is "seven hundred forty-five thousand, eight hundred thirty-eight".