745319 has 4 divisors (see below), whose sum is σ = 762696. Its totient is φ = 727944.

The previous prime is 745307. The next prime is 745337. The reversal of 745319 is 913547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913547 = 653 ⋅1399.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745319 is a prime.

It is a super-2 number, since 2×745319² = 1111000823522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745291 and 745300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8624 + ... + 8709.

It is an arithmetic number, because the mean of its divisors is an integer number (190674).

2⁷⁴⁵³¹⁹ is an apocalyptic number.

745319 is a deficient number, since it is larger than the sum of its proper divisors (17377).

745319 is a wasteful number, since it uses less digits than its factorization.

745319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17376.

The product of its digits is 3780, while the sum is 29.

The square root of 745319 is about 863.3185970428. The cubic root of 745319 is about 90.6666141027. Note that the first 4 decimals are identical.

The spelling of 745319 in words is "seven hundred forty-five thousand, three hundred nineteen".