745605 has 40 divisors (see below), whose sum is σ = 1533312. Its totient is φ = 339552.

The previous prime is 745601. The next prime is 745609. The reversal of 745605 is 506547.

It is an interprime number because it is at equal distance from previous prime (745601) and next prime (745609).

It is not a de Polignac number, because 745605 - 2² = 745601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745601) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2704 + ... + 2966.

2⁷⁴⁵⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

745605 is an abundant number, since it is smaller than the sum of its proper divisors (787707).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745605 is a wasteful number, since it uses less digits than its factorization.

745605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 745605 is about 863.4842210487. The cubic root of 745605 is about 90.6782097352.

The spelling of 745605 in words is "seven hundred forty-five thousand, six hundred five".