743081 has 4 divisors (see below), whose sum is σ = 747972. Its totient is φ = 738192.

The previous prime is 743069. The next prime is 743089. The reversal of 743081 is 180347.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 173056 + 570025 = 416^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 743081 - 2¹⁰ = 742057 is a prime.

It is a super-2 number, since 2×743081² = 1104338745122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (743089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210 + ... + 2523.

It is an arithmetic number, because the mean of its divisors is an integer number (186993).

2⁷⁴³⁰⁸¹ is an apocalyptic number.

It is an amenable number.

743081 is a deficient number, since it is larger than the sum of its proper divisors (4891).

743081 is a wasteful number, since it uses less digits than its factorization.

743081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4890.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 743081 is about 862.0214614498. The cubic root of 743081 is about 90.5757736621.

The spelling of 743081 in words is "seven hundred forty-three thousand, eighty-one".