745243810 has 8 divisors (see below), whose sum is σ = 1341438876. Its totient is φ = 298097520.

The previous prime is 745243801. The next prime is 745243817. The reversal of 745243810 is 18342547.

It can be written as a sum of positive squares in 2 ways, for example, as 744362089 + 881721 = 27283^2 + 939^2 .

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

It is a super-2 number, since 2×745243810² = 1110776672686632200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (745243817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37262181 + ... + 37262200.

Almost surely, 2^745243810 is an apocalyptic number.

745243810 is a deficient number, since it is larger than the sum of its proper divisors (596195066).

745243810 is a wasteful number, since it uses less digits than its factorization.

745243810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74524388.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 745243810 is about 27299.1540161962. The cubic root of 745243810 is about 906.6356509418.

The spelling of 745243810 in words is "seven hundred forty-five million, two hundred forty-three thousand, eight hundred ten".