743261 has 4 divisors (see below), whose sum is σ = 782400. Its totient is φ = 704124.

The previous prime is 743251. The next prime is 743263. The reversal of 743261 is 162347.

743261 = 85² + 86² + ... + 141².

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162347 = 31 ⋅5237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-743261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19541 + ... + 19578.

It is an arithmetic number, because the mean of its divisors is an integer number (195600).

2⁷⁴³²⁶¹ is an apocalyptic number.

It is an amenable number.

743261 is a deficient number, since it is larger than the sum of its proper divisors (39139).

743261 is a wasteful number, since it uses less digits than its factorization.

743261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39138.

The product of its digits is 1008, while the sum is 23.

The square root of 743261 is about 862.1258608811. The cubic root of 743261 is about 90.5830866033.

The spelling of 743261 in words is "seven hundred forty-three thousand, two hundred sixty-one".