745741285 has 4 divisors (see below), whose sum is σ = 894889548. Its totient is φ = 596593024.

The previous prime is 745741273. The next prime is 745741291. The reversal of 745741285 is 582147547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582147547 = 2957 ⋅196871.

It can be written as a sum of positive squares in 2 ways, for example, as 459759364 + 285981921 = 21442^2 + 16911^2 .

It is a cyclic number.

It is not a de Polignac number, because 745741285 - 2⁹ = 745740773 is a prime.

It is a super-2 number, since 2×745741285² = 1112260128306902450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74574124 + ... + 74574133.

It is an arithmetic number, because the mean of its divisors is an integer number (223722387).

Almost surely, 2^745741285 is an apocalyptic number.

It is an amenable number.

745741285 is a deficient number, since it is larger than the sum of its proper divisors (149148263).

745741285 is a wasteful number, since it uses less digits than its factorization.

745741285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149148262.

The product of its digits is 313600, while the sum is 43.

The square root of 745741285 is about 27308.2640422272. The cubic root of 745741285 is about 906.8373425416.

The spelling of 745741285 in words is "seven hundred forty-five million, seven hundred forty-one thousand, two hundred eighty-five".