745145 has 8 divisors (see below), whose sum is σ = 907200. Its totient is φ = 587440.

The previous prime is 745141. The next prime is 745181. The reversal of 745145 is 541547.

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

It is not a de Polignac number, because 745145 - 2² = 745141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745141) 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, 695 + ... + 1404.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2⁷⁴⁵¹⁴⁵ is an apocalyptic number.

It is an amenable number.

745145 is a deficient number, since it is larger than the sum of its proper divisors (162055).

745145 is a wasteful number, since it uses less digits than its factorization.

745145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175.

The product of its digits is 2800, while the sum is 26.

The square root of 745145 is about 863.2178172397. The cubic root of 745145 is about 90.6595579658.

The spelling of 745145 in words is "seven hundred forty-five thousand, one hundred forty-five".