743631 has 16 divisors (see below), whose sum is σ = 1200384. Its totient is φ = 399744.

The previous prime is 743609. The next prime is 743657. The reversal of 743631 is 136347.

It is not a de Polignac number, because 743631 - 2¹⁰ = 742607 is a prime.

It is a super-2 number, since 2×743631² = 1105974128322, which contains 22 as substring.

743631 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743671) 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, 685 + ... + 1398.

It is an arithmetic number, because the mean of its divisors is an integer number (75024).

2⁷⁴³⁶³¹ is an apocalyptic number.

743631 is a deficient number, since it is larger than the sum of its proper divisors (456753).

743631 is a wasteful number, since it uses less digits than its factorization.

743631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110.

The product of its digits is 1512, while the sum is 24.

The square root of 743631 is about 862.3404200198. The cubic root of 743631 is about 90.5981150532.

Adding to 743631 its reverse (136347), we get a palindrome (879978).

The spelling of 743631 in words is "seven hundred forty-three thousand, six hundred thirty-one".