743445 has 16 divisors (see below), whose sum is σ = 1321920. Its totient is φ = 396432.

The previous prime is 743423. The next prime is 743447. The reversal of 743445 is 544347.

It is not a de Polignac number, because 743445 - 2¹⁴ = 727061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2619 + ... + 2888.

It is an arithmetic number, because the mean of its divisors is an integer number (82620).

2⁷⁴³⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

743445 is a deficient number, since it is larger than the sum of its proper divisors (578475).

743445 is a wasteful number, since it uses less digits than its factorization.

743445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521 (or 5515 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 743445 is about 862.2325672346. The cubic root of 743445 is about 90.5905608341.

The spelling of 743445 in words is "seven hundred forty-three thousand, four hundred forty-five".