745008243 has 16 divisors (see below), whose sum is σ = 1135829760. Its totient is φ = 425501856.

The previous prime is 745008241. The next prime is 745008269. The reversal of 745008243 is 342800547.

It is not a de Polignac number, because 745008243 - 2¹ = 745008241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745008241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39048 + ... + 54906.

It is an arithmetic number, because the mean of its divisors is an integer number (70989360).

Almost surely, 2^745008243 is an apocalyptic number.

745008243 is a deficient number, since it is larger than the sum of its proper divisors (390821517).

745008243 is a wasteful number, since it uses less digits than its factorization.

745008243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18106.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 745008243 is about 27294.8391275714. The cubic root of 745008243 is about 906.5401135510.

The spelling of 745008243 in words is "seven hundred forty-five million, eight thousand, two hundred forty-three".