745268815 has 4 divisors (see below), whose sum is σ = 894322584. Its totient is φ = 596215048.

The previous prime is 745268813. The next prime is 745268833. The reversal of 745268815 is 518862547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 745268815 - 2¹ = 745268813 is a prime.

It is a super-2 number, since 2×745268815² = 1110851213223008450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745268813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74526877 + ... + 74526886.

It is an arithmetic number, because the mean of its divisors is an integer number (223580646).

Almost surely, 2^745268815 is an apocalyptic number.

745268815 is a deficient number, since it is larger than the sum of its proper divisors (149053769).

745268815 is a wasteful number, since it uses less digits than its factorization.

745268815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149053768.

The product of its digits is 537600, while the sum is 46.

The square root of 745268815 is about 27299.6119935797. The cubic root of 745268815 is about 906.6457908766.

It can be divided in two parts, 7452 and 68815, that added together give a palindrome (76267).

The spelling of 745268815 in words is "seven hundred forty-five million, two hundred sixty-eight thousand, eight hundred fifteen".