71630243 has 8 divisors (see below), whose sum is σ = 74046336. Its totient is φ = 69220800.

The previous prime is 71630233. The next prime is 71630263. The reversal of 71630243 is 34203617.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71630243 - 2¹⁰ = 71629219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71630233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30263 + ... + 32543.

It is an arithmetic number, because the mean of its divisors is an integer number (9255792).

Almost surely, 2^71630243 is an apocalyptic number.

71630243 is a deficient number, since it is larger than the sum of its proper divisors (2416093).

71630243 is a wasteful number, since it uses less digits than its factorization.

71630243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 71630243 is about 8463.4651886801. The cubic root of 71630243 is about 415.3033887384.

The spelling of 71630243 in words is "seventy-one million, six hundred thirty thousand, two hundred forty-three".