71814899 has 8 divisors (see below), whose sum is σ = 77439600. Its totient is φ = 66204576.

The previous prime is 71814893. The next prime is 71814913. The reversal of 71814899 is 99841817.

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 71814899 - 2²⁰ = 70766323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71814893) 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, 8252 + ... + 14550.

It is an arithmetic number, because the mean of its divisors is an integer number (9679950).

Almost surely, 2^71814899 is an apocalyptic number.

71814899 is a deficient number, since it is larger than the sum of its proper divisors (5624701).

71814899 is a wasteful number, since it uses less digits than its factorization.

71814899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7189.

The product of its digits is 145152, while the sum is 47.

The square root of 71814899 is about 8474.3671740136. The cubic root of 71814899 is about 415.6599534853.

The spelling of 71814899 in words is "seventy-one million, eight hundred fourteen thousand, eight hundred ninety-nine".