71214665 has 8 divisors (see below), whose sum is σ = 87445248. Its totient is φ = 55646640.

The previous prime is 71214659. The next prime is 71214707. The reversal of 71214665 is 56641217.

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

It is a de Polignac number, because none of the positive numbers 2^k-71214665 is a prime.

It is a super-2 number, since 2×71214665² = 10143057022124450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165401 + ... + 165830.

It is an arithmetic number, because the mean of its divisors is an integer number (10930656).

Almost surely, 2^71214665 is an apocalyptic number.

It is an amenable number.

71214665 is a deficient number, since it is larger than the sum of its proper divisors (16230583).

71214665 is a wasteful number, since it uses less digits than its factorization.

71214665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331279.

The product of its digits is 10080, while the sum is 32.

The square root of 71214665 is about 8438.8781837398. The cubic root of 71214665 is about 414.4986736779.

The spelling of 71214665 in words is "seventy-one million, two hundred fourteen thousand, six hundred sixty-five".