745270745 has 4 divisors (see below), whose sum is σ = 894324900. Its totient is φ = 596216592.

The previous prime is 745270703. The next prime is 745270777. The reversal of 745270745 is 547072547.

745270745 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 263380441 + 481890304 = 16229^2 + 21952^2 .

It is a cyclic number.

It is not a de Polignac number, because 745270745 - 2²⁶ = 678161881 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74527070 + ... + 74527079.

It is an arithmetic number, because the mean of its divisors is an integer number (223581225).

Almost surely, 2^745270745 is an apocalyptic number.

It is an amenable number.

745270745 is a deficient number, since it is larger than the sum of its proper divisors (149054155).

745270745 is a wasteful number, since it uses less digits than its factorization.

745270745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149054154.

The product of its (nonzero) digits is 274400, while the sum is 41.

The square root of 745270745 is about 27299.6473420445. The cubic root of 745270745 is about 906.6465735136.

The spelling of 745270745 in words is "seven hundred forty-five million, two hundred seventy thousand, seven hundred forty-five".