745039 has 8 divisors (see below), whose sum is σ = 804960. Its totient is φ = 687456.

The previous prime is 745037. The next prime is 745051. The reversal of 745039 is 930547.

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

It is a cyclic number.

It is not a de Polignac number, because 745039 - 2¹ = 745037 is a prime.

It is a super-2 number, since 2×745039² = 1110166223042, which contains 22 as substring.

It is a Duffinian number.

745039 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 744998 and 745016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745033) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 109 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (100620).

2⁷⁴⁵⁰³⁹ is an apocalyptic number.

745039 is a deficient number, since it is larger than the sum of its proper divisors (59921).

745039 is a wasteful number, since it uses less digits than its factorization.

745039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 745039 is about 863.1564168794. The cubic root of 745039 is about 90.6552588612.

The spelling of 745039 in words is "seven hundred forty-five thousand, thirty-nine".