71841623 has 4 divisors (see below), whose sum is σ = 82104720. Its totient is φ = 61578528.

The previous prime is 71841617. The next prime is 71841683. The reversal of 71841623 is 32614817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32614817 = 2377 ⋅13721.

It is a cyclic number.

It is not a de Polignac number, because 71841623 - 2⁴ = 71841607 is a prime.

It is a super-2 number, since 2×71841623² = 10322437590548258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71841623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71841683) 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, 5131538 + ... + 5131551.

It is an arithmetic number, because the mean of its divisors is an integer number (20526180).

Almost surely, 2^71841623 is an apocalyptic number.

71841623 is a deficient number, since it is larger than the sum of its proper divisors (10263097).

71841623 is a wasteful number, since it uses less digits than its factorization.

71841623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10263096.

The product of its digits is 8064, while the sum is 32.

The square root of 71841623 is about 8475.9437822581. The cubic root of 71841623 is about 415.7115060144.

The spelling of 71841623 in words is "seventy-one million, eight hundred forty-one thousand, six hundred twenty-three".