745247 has 2 divisors, whose sum is σ = 745248. Its totient is φ = 745246.

The previous prime is 745243. The next prime is 745249. The reversal of 745247 is 742547.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 745247 - 2² = 745243 is a prime.

Together with 745249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372623 + 372624.

It is an arithmetic number, because the mean of its divisors is an integer number (372624).

2⁷⁴⁵²⁴⁷ is an apocalyptic number.

745247 is a deficient number, since it is larger than the sum of its proper divisors (1).

745247 is an equidigital number, since it uses as much as digits as its factorization.

745247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 29.

The square root of 745247 is about 863.2768964822. The cubic root of 745247 is about 90.6636944551.

It can be divided in two parts, 7 and 45247, that added together give a palindrome (45254).

The spelling of 745247 in words is "seven hundred forty-five thousand, two hundred forty-seven".