71604243 has 10 divisors (see below), whose sum is σ = 106964484. Its totient is φ = 47736108.

The previous prime is 71604193. The next prime is 71604263. The reversal of 71604243 is 34240617.

It is not a de Polignac number, because 71604243 - 2¹⁰ = 71603219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (71604263) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 441921 + ... + 442082.

Almost surely, 2^71604243 is an apocalyptic number.

71604243 is a deficient number, since it is larger than the sum of its proper divisors (35360241).

71604243 is an equidigital number, since it uses as much as digits as its factorization.

71604243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884015 (or 884006 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 71604243 is about 8461.9290353914. The cubic root of 71604243 is about 415.2531343841.

The spelling of 71604243 in words is "seventy-one million, six hundred four thousand, two hundred forty-three".