71640303 has 12 divisors (see below), whose sum is σ = 111115800. Its totient is φ = 40937232.

The previous prime is 71640301. The next prime is 71640313. The reversal of 71640303 is 30304617.

It is not a de Polignac number, because 71640303 - 2¹ = 71640301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71640301) 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 in 11 ways as a sum of consecutive naturals, for example, 243528 + ... + 243821.

It is an arithmetic number, because the mean of its divisors is an integer number (9259650).

Almost surely, 2^71640303 is an apocalyptic number.

71640303 is a deficient number, since it is larger than the sum of its proper divisors (39475497).

71640303 is a wasteful number, since it uses less digits than its factorization.

71640303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487366 (or 487359 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 71640303 is about 8464.0594870310. The cubic root of 71640303 is about 415.3228300448.

The spelling of 71640303 in words is "seventy-one million, six hundred forty thousand, three hundred three".