71430863 has 4 divisors (see below), whose sum is σ = 81635280. Its totient is φ = 61226448.

The previous prime is 71430811. The next prime is 71430883. The reversal of 71430863 is 36803417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71430863 - 2⁸ = 71430607 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 (71430883) 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, 5102198 + ... + 5102211.

It is an arithmetic number, because the mean of its divisors is an integer number (20408820).

Almost surely, 2^71430863 is an apocalyptic number.

71430863 is a deficient number, since it is larger than the sum of its proper divisors (10204417).

71430863 is a wasteful number, since it uses less digits than its factorization.

71430863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10204416.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 71430863 is about 8451.6781173918. The cubic root of 71430863 is about 414.9177037181.

The spelling of 71430863 in words is "seventy-one million, four hundred thirty thousand, eight hundred sixty-three".