745747 has 2 divisors, whose sum is σ = 745748. Its totient is φ = 745746.

The previous prime is 745741. The next prime is 745751. The reversal of 745747 is 747547.

It is a strong prime.

It is an emirp because it is prime and its reverse (747547) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745747 is a prime.

It is a super-2 number, since 2×745747² = 1112277176018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (745741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372873 + 372874.

It is an arithmetic number, because the mean of its divisors is an integer number (372874).

2⁷⁴⁵⁷⁴⁷ is an apocalyptic number.

745747 is a deficient number, since it is larger than the sum of its proper divisors (1).

745747 is an equidigital number, since it uses as much as digits as its factorization.

745747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27440, while the sum is 34.

The square root of 745747 is about 863.5664421456. The cubic root of 745747 is about 90.6839659056.

It can be divided in two parts, 7 and 45747, that added together give a palindrome (45754).

The spelling of 745747 in words is "seven hundred forty-five thousand, seven hundred forty-seven".