745810013 has 6 divisors (see below), whose sum is σ = 807593274. Its totient is φ = 688439856.

The previous prime is 745810003. The next prime is 745810027. The reversal of 745810013 is 310018547.

It can be written as a sum of positive squares in 3 ways, for example, as 7166329 + 738643684 = 2677^2 + 27178^2 .

It is not a de Polignac number, because 745810013 - 2¹⁶ = 745744477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745810003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2206370 + ... + 2206707.

It is an arithmetic number, because the mean of its divisors is an integer number (134598879).

Almost surely, 2^745810013 is an apocalyptic number.

It is an amenable number.

745810013 is a deficient number, since it is larger than the sum of its proper divisors (61783261).

745810013 is a wasteful number, since it uses less digits than its factorization.

745810013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4413103 (or 4413090 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 745810013 is about 27309.5223868892. The cubic root of 745810013 is about 906.8651999249.

It can be divided in two parts, 7458 and 10013, that added together give a palindrome (17471).

The spelling of 745810013 in words is "seven hundred forty-five million, eight hundred ten thousand, thirteen".