745245 has 12 divisors (see below), whose sum is σ = 1291836. Its totient is φ = 397440.

The previous prime is 745243. The next prime is 745247. The reversal of 745245 is 542547.

It is an interprime number because it is at equal distance from previous prime (745243) and next prime (745247).

It can be written as a sum of positive squares in 2 ways, for example, as 127449 + 617796 = 357^2 + 786^2 .

It is not a de Polignac number, because 745245 - 2¹ = 745243 is a prime.

It is a super-2 number, since 2×745245² = 1110780220050, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745243) 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 11 ways as a sum of consecutive naturals, for example, 8236 + ... + 8325.

It is an arithmetic number, because the mean of its divisors is an integer number (107653).

2⁷⁴⁵²⁴⁵ is an apocalyptic number.

It is an amenable number.

745245 is a deficient number, since it is larger than the sum of its proper divisors (546591).

745245 is a wasteful number, since it uses less digits than its factorization.

745245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16572 (or 16569 counting only the distinct ones).

The product of its digits is 5600, while the sum is 27.

The square root of 745245 is about 863.2757381046. The cubic root of 745245 is about 90.6636133511.

It can be divided in two parts, 74524 and 5, that added together give a square (74529 = 273²).

The spelling of 745245 in words is "seven hundred forty-five thousand, two hundred forty-five".