745872269 has 2 divisors, whose sum is σ = 745872270. Its totient is φ = 745872268.

The previous prime is 745872223. The next prime is 745872271. The reversal of 745872269 is 962278547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 616777225 + 129095044 = 24835^2 + 11362^2 .

It is a cyclic number.

It is not a de Polignac number, because 745872269 - 2⁸ = 745872013 is a prime.

It is a super-2 number, since 2×745872269² = 1112650883326416722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 745872271, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745872289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372936134 + 372936135.

It is an arithmetic number, because the mean of its divisors is an integer number (372936135).

Almost surely, 2^745872269 is an apocalyptic number.

It is an amenable number.

745872269 is a deficient number, since it is larger than the sum of its proper divisors (1).

745872269 is an equidigital number, since it uses as much as digits as its factorization.

745872269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 50.

The square root of 745872269 is about 27310.6621853078. The cubic root of 745872269 is about 906.8904325480.

The spelling of 745872269 in words is "seven hundred forty-five million, eight hundred seventy-two thousand, two hundred sixty-nine".