745987733 has 2 divisors, whose sum is σ = 745987734. Its totient is φ = 745987732.

The previous prime is 745987687. The next prime is 745987763. The reversal of 745987733 is 337789547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 624150289 + 121837444 = 24983^2 + 11038^2 .

It is a cyclic number.

It is not a de Polignac number, because 745987733 - 2²⁶ = 678878869 is a prime.

It is a Sophie Germain 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 (745987763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372993866 + 372993867.

It is an arithmetic number, because the mean of its divisors is an integer number (372993867).

Almost surely, 2^745987733 is an apocalyptic number.

It is an amenable number.

745987733 is a deficient number, since it is larger than the sum of its proper divisors (1).

745987733 is an equidigital number, since it uses as much as digits as its factorization.

745987733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4445280, while the sum is 53.

The square root of 745987733 is about 27312.7760031821. The cubic root of 745987733 is about 906.9372268846.

The spelling of 745987733 in words is "seven hundred forty-five million, nine hundred eighty-seven thousand, seven hundred thirty-three".