745331 has 6 divisors (see below), whose sum is σ = 792060. Its totient is φ = 701216.

The previous prime is 745307. The next prime is 745337. The reversal of 745331 is 133547.

It is a happy number.

It is not a de Polignac number, because 745331 - 2¹⁴ = 728947 is a prime.

It is a super-2 number, since 2×745331² = 1111036599122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 745297 and 745306.

It is not an unprimeable number, because it can be changed into a prime (745337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1001 + ... + 1578.

It is an arithmetic number, because the mean of its divisors is an integer number (132010).

2⁷⁴⁵³³¹ is an apocalyptic number.

745331 is a deficient number, since it is larger than the sum of its proper divisors (46729).

745331 is a wasteful number, since it uses less digits than its factorization.

745331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613 (or 2596 counting only the distinct ones).

The product of its digits is 1260, while the sum is 23.

The square root of 745331 is about 863.3255469404. The cubic root of 745331 is about 90.6671006924.

Adding to 745331 its reverse (133547), we get a palindrome (878878).

The spelling of 745331 in words is "seven hundred forty-five thousand, three hundred thirty-one".