71268361 has 2 divisors, whose sum is σ = 71268362. Its totient is φ = 71268360.

The previous prime is 71268343. The next prime is 71268371. The reversal of 71268361 is 16386217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57093136 + 14175225 = 7556^2 + 3765^2 .

It is an emirp because it is prime and its reverse (16386217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71268361 - 2¹³ = 71260169 is a prime.

It is not a weakly prime, because it can be changed into another prime (71268371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35634180 + 35634181.

It is an arithmetic number, because the mean of its divisors is an integer number (35634181).

Almost surely, 2^71268361 is an apocalyptic number.

It is an amenable number.

71268361 is a deficient number, since it is larger than the sum of its proper divisors (1).

71268361 is an equidigital number, since it uses as much as digits as its factorization.

71268361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 71268361 is about 8442.0590497816. The cubic root of 71268361 is about 414.6028251155.

The spelling of 71268361 in words is "seventy-one million, two hundred sixty-eight thousand, three hundred sixty-one".