71629243 has 4 divisors (see below), whose sum is σ = 81862000. Its totient is φ = 61396488.

The previous prime is 71629223. The next prime is 71629277. The reversal of 71629243 is 34292617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34292617 = 1609 ⋅21313.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71629243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71629199 and 71629208.

It is not an unprimeable number, because it can be changed into a prime (71629223) 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, 5116368 + ... + 5116381.

It is an arithmetic number, because the mean of its divisors is an integer number (20465500).

Almost surely, 2^71629243 is an apocalyptic number.

71629243 is a deficient number, since it is larger than the sum of its proper divisors (10232757).

71629243 is a wasteful number, since it uses less digits than its factorization.

71629243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10232756.

The product of its digits is 18144, while the sum is 34.

The square root of 71629243 is about 8463.4061110170. The cubic root of 71629243 is about 415.3014561035.

The spelling of 71629243 in words is "seventy-one million, six hundred twenty-nine thousand, two hundred forty-three".