743345 has 4 divisors (see below), whose sum is σ = 892020. Its totient is φ = 594672.

The previous prime is 743339. The next prime is 743363. The reversal of 743345 is 543347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543347 = 7 ⋅77621.

It can be written as a sum of positive squares in 2 ways, for example, as 355216 + 388129 = 596^2 + 623^2 .

It is a cyclic number.

It is not a de Polignac number, because 743345 - 2⁸ = 743089 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74330 + ... + 74339.

It is an arithmetic number, because the mean of its divisors is an integer number (223005).

2⁷⁴³³⁴⁵ is an apocalyptic number.

It is an amenable number.

743345 is a deficient number, since it is larger than the sum of its proper divisors (148675).

743345 is a wasteful number, since it uses less digits than its factorization.

743345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148674.

The product of its digits is 5040, while the sum is 26.

The square root of 743345 is about 862.1745762895. The cubic root of 743345 is about 90.5864989051.

The spelling of 743345 in words is "seven hundred forty-three thousand, three hundred forty-five".