745633 has 6 divisors (see below), whose sum is σ = 867426. Its totient is φ = 639072.

The previous prime is 745631. The next prime is 745649. The reversal of 745633 is 336547.

It can be written as a sum of positive squares in only one way, i.e., 717409 + 28224 = 847^2 + 168^2 .

It is not a de Polignac number, because 745633 - 2¹ = 745631 is a prime.

It is the 864-th Hogben number.

It is not an unprimeable number, because it can be changed into a prime (745631) by changing a digit.

It is a nontrivial repunit in base 863.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7560 + ... + 7657.

It is an arithmetic number, because the mean of its divisors is an integer number (144571).

2⁷⁴⁵⁶³³ is an apocalyptic number.

It is an amenable number.

745633 is a deficient number, since it is larger than the sum of its proper divisors (121793).

745633 is a wasteful number, since it uses less digits than its factorization.

745633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15231 (or 15224 counting only the distinct ones).

The product of its digits is 7560, while the sum is 28.

The square root of 745633 is about 863.5004342790. The cubic root of 745633 is about 90.6793448125.

It can be divided in two parts, 745 and 633, that added together give a triangular number (1378 = T₅₂).

The spelling of 745633 in words is "seven hundred forty-five thousand, six hundred thirty-three".