743506 has 8 divisors (see below), whose sum is σ = 1128060. Its totient is φ = 367488.

The previous prime is 743447. The next prime is 743507. The reversal of 743506 is 605347.

It can be written as a sum of positive squares in 2 ways, for example, as 737881 + 5625 = 859^2 + 75^2 .

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

It is not an unprimeable number, because it can be changed into a prime (743507) 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, 1911 + ... + 2266.

2⁷⁴³⁵⁰⁶ is an apocalyptic number.

743506 is a deficient number, since it is larger than the sum of its proper divisors (384554).

743506 is a wasteful number, since it uses less digits than its factorization.

743506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 743506 is about 862.2679397960. The cubic root of 743506 is about 90.5930384319.

The spelling of 743506 in words is "seven hundred forty-three thousand, five hundred six".