745263290 has 8 divisors (see below), whose sum is σ = 1341473940. Its totient is φ = 298105312.

The previous prime is 745263247. The next prime is 745263293. The reversal of 745263290 is 92362547.

It can be written as a sum of positive squares in 2 ways, for example, as 745235401 + 27889 = 27299^2 + 167^2 .

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

It is not an unprimeable number, because it can be changed into a prime (745263293) 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, 37263155 + ... + 37263174.

Almost surely, 2^745263290 is an apocalyptic number.

745263290 is a deficient number, since it is larger than the sum of its proper divisors (596210650).

745263290 is a wasteful number, since it uses less digits than its factorization.

745263290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74526336.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 745263290 is about 27299.5108014777. The cubic root of 745263290 is about 906.6435504187.

The spelling of 745263290 in words is "seven hundred forty-five million, two hundred sixty-three thousand, two hundred ninety".