71066423 has 4 divisors (see below), whose sum is σ = 71244048. Its totient is φ = 70888800.

The previous prime is 71066419. The next prime is 71066453. The reversal of 71066423 is 32466017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32466017 = 229 ⋅141773.

It is a cyclic number.

It is not a de Polignac number, because 71066423 - 2² = 71066419 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 (71066453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88211 + ... + 89012.

It is an arithmetic number, because the mean of its divisors is an integer number (17811012).

Almost surely, 2^71066423 is an apocalyptic number.

71066423 is a deficient number, since it is larger than the sum of its proper divisors (177625).

71066423 is a wasteful number, since it uses less digits than its factorization.

71066423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177624.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 71066423 is about 8430.0903316631. The cubic root of 71066423 is about 414.2108640551.

The spelling of 71066423 in words is "seventy-one million, sixty-six thousand, four hundred twenty-three".