71213863 has 8 divisors (see below), whose sum is σ = 83587232. Its totient is φ = 59390496.

The previous prime is 71213861. The next prime is 71213899. The reversal of 71213863 is 36831217.

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 71213863 - 2¹ = 71213861 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 (71213861) 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, 137220 + ... + 137737.

It is an arithmetic number, because the mean of its divisors is an integer number (10448404).

Almost surely, 2^71213863 is an apocalyptic number.

71213863 is a deficient number, since it is larger than the sum of its proper divisors (12373369).

71213863 is a wasteful number, since it uses less digits than its factorization.

71213863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275001.

The product of its digits is 6048, while the sum is 31.

The square root of 71213863 is about 8438.8306654417. The cubic root of 71213863 is about 414.4971176820.

The spelling of 71213863 in words is "seventy-one million, two hundred thirteen thousand, eight hundred sixty-three".