745636345 has 8 divisors (see below), whose sum is σ = 895301064. Its totient is φ = 596150784.

The previous prime is 745636327. The next prime is 745636349. The reversal of 745636345 is 543636547.

745636345 = 19308² + 19309².

745636345 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 372798864 + 372837481 = 19308^2 + 19309^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 745636345 - 2²³ = 737247737 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745636349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35454 + ... + 52423.

It is an arithmetic number, because the mean of its divisors is an integer number (111912633).

Almost surely, 2^745636345 is an apocalyptic number.

745636345 is the 19309-th centered square number.

It is an amenable number.

745636345 is a deficient number, since it is larger than the sum of its proper divisors (149664719).

745636345 is a wasteful number, since it uses less digits than its factorization.

745636345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89579.

The product of its digits is 907200, while the sum is 43.

The square root of 745636345 is about 27306.3425782363. The cubic root of 745636345 is about 906.7948041186.

It can be divided in two parts, 74563 and 6345, that added together give a palindrome (80908).

The spelling of 745636345 in words is "seven hundred forty-five million, six hundred thirty-six thousand, three hundred forty-five".