71336249 has 8 divisors (see below), whose sum is σ = 72173640. Its totient is φ = 70502400.

The previous prime is 71336231. The next prime is 71336273. The reversal of 71336249 is 94263317.

It can be written as a sum of positive squares in 4 ways, for example, as 34515625 + 36820624 = 5875^2 + 6068^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71336249 - 2⁸ = 71335993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71336219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69359 + ... + 70379.

It is an arithmetic number, because the mean of its divisors is an integer number (9021705).

Almost surely, 2^71336249 is an apocalyptic number.

It is an amenable number.

71336249 is a deficient number, since it is larger than the sum of its proper divisors (837391).

71336249 is a wasteful number, since it uses less digits than its factorization.

71336249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771.

The product of its digits is 27216, while the sum is 35.

The square root of 71336249 is about 8446.0789127263. The cubic root of 71336249 is about 414.7344292090.

The spelling of 71336249 in words is "seventy-one million, three hundred thirty-six thousand, two hundred forty-nine".