71248691 has 2 divisors, whose sum is σ = 71248692. Its totient is φ = 71248690.

The previous prime is 71248637. The next prime is 71248703. The reversal of 71248691 is 19684217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71248691 - 2¹⁸ = 70986547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71248601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35624345 + 35624346.

It is an arithmetic number, because the mean of its divisors is an integer number (35624346).

Almost surely, 2^71248691 is an apocalyptic number.

71248691 is a deficient number, since it is larger than the sum of its proper divisors (1).

71248691 is an equidigital number, since it uses as much as digits as its factorization.

71248691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 71248691 is about 8440.8939692428. The cubic root of 71248691 is about 414.5646782770.

The spelling of 71248691 in words is "seventy-one million, two hundred forty-eight thousand, six hundred ninety-one".