745431297 has 8 divisors (see below), whose sum is σ = 1070362944. Its totient is φ = 458726928.

The previous prime is 745431289. The next prime is 745431307. The reversal of 745431297 is 792134547.

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

It is not a de Polignac number, because 745431297 - 2³ = 745431289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745432297) 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, 9556773 + ... + 9556850.

It is an arithmetic number, because the mean of its divisors is an integer number (133795368).

Almost surely, 2^745431297 is an apocalyptic number.

It is an amenable number.

745431297 is a deficient number, since it is larger than the sum of its proper divisors (324931647).

745431297 is a wasteful number, since it uses less digits than its factorization.

745431297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19113639.

The product of its digits is 211680, while the sum is 42.

The square root of 745431297 is about 27302.5877344987. The cubic root of 745431297 is about 906.7116744496.

The spelling of 745431297 in words is "seven hundred forty-five million, four hundred thirty-one thousand, two hundred ninety-seven".