71342783 has 4 divisors (see below), whose sum is σ = 71359680. Its totient is φ = 71325888.

The previous prime is 71342759. The next prime is 71342801. The reversal of 71342783 is 38724317.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 38724317 = 17 ⋅2277901.

It is a cyclic number.

It is not a de Polignac number, because 71342783 - 2²² = 67148479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71342743) 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 3 ways as a sum of consecutive naturals, for example, 3983 + ... + 12591.

It is an arithmetic number, because the mean of its divisors is an integer number (17839920).

Almost surely, 2^71342783 is an apocalyptic number.

71342783 is a deficient number, since it is larger than the sum of its proper divisors (16897).

71342783 is an equidigital number, since it uses as much as digits as its factorization.

71342783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16896.

The product of its digits is 28224, while the sum is 35.

The square root of 71342783 is about 8446.4657105798. The cubic root of 71342783 is about 414.7470912710.

The spelling of 71342783 in words is "seventy-one million, three hundred forty-two thousand, seven hundred eighty-three".