745078 has 4 divisors (see below), whose sum is σ = 1117620. Its totient is φ = 372538.

The previous prime is 745067. The next prime is 745103. The reversal of 745078 is 870547.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

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, 186268 + ... + 186271.

It is an arithmetic number, because the mean of its divisors is an integer number (279405).

2⁷⁴⁵⁰⁷⁸ is an apocalyptic number.

745078 is a deficient number, since it is larger than the sum of its proper divisors (372542).

745078 is a wasteful number, since it uses less digits than its factorization.

745078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372541.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 745078 is about 863.1790080858. The cubic root of 745078 is about 90.6568406547.

The spelling of 745078 in words is "seven hundred forty-five thousand, seventy-eight".