71862223 has 4 divisors (see below), whose sum is σ = 73218168. Its totient is φ = 70506280.

The previous prime is 71862191. The next prime is 71862229. The reversal of 71862223 is 32226817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32226817 = 7 ⋅4603831.

It is a cyclic number.

It is not a de Polignac number, because 71862223 - 2⁵ = 71862191 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 (71862229) 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, 677893 + ... + 677998.

It is an arithmetic number, because the mean of its divisors is an integer number (18304542).

Almost surely, 2^71862223 is an apocalyptic number.

71862223 is a deficient number, since it is larger than the sum of its proper divisors (1355945).

71862223 is a wasteful number, since it uses less digits than its factorization.

71862223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355944.

The product of its digits is 8064, while the sum is 31.

The square root of 71862223 is about 8477.1588990652. The cubic root of 71862223 is about 415.7512361795.

It can be divided in two parts, 7186 and 2223, that added together give a square (9409 = 97²).

The spelling of 71862223 in words is "seventy-one million, eight hundred sixty-two thousand, two hundred twenty-three".