71248369 has 2 divisors, whose sum is σ = 71248370. Its totient is φ = 71248368.

The previous prime is 71248349. The next prime is 71248433. The reversal of 71248369 is 96384217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49280400 + 21967969 = 7020^2 + 4687^2 .

It is a cyclic number.

It is not a de Polignac number, because 71248369 - 2⁵ = 71248337 is a prime.

It is a super-2 number, since 2×71248369² = 10152660170320322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71248349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35624184 + 35624185.

It is an arithmetic number, because the mean of its divisors is an integer number (35624185).

Almost surely, 2^71248369 is an apocalyptic number.

It is an amenable number.

71248369 is a deficient number, since it is larger than the sum of its proper divisors (1).

71248369 is an equidigital number, since it uses as much as digits as its factorization.

71248369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 71248369 is about 8440.8748954122. The cubic root of 71248369 is about 414.5640537508.

It can be divided in two parts, 71248 and 369, that added together give a palindrome (71617).

The spelling of 71248369 in words is "seventy-one million, two hundred forty-eight thousand, three hundred sixty-nine".