71214609 has 4 divisors (see below), whose sum is σ = 94952816. Its totient is φ = 47476404.

The previous prime is 71214589. The next prime is 71214623. The reversal of 71214609 is 90641217.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90641217 = 3 ⋅30213739.

It is not a de Polignac number, because 71214609 - 2¹⁵ = 71181841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71214659) 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, 11869099 + ... + 11869104.

It is an arithmetic number, because the mean of its divisors is an integer number (23738204).

Almost surely, 2^71214609 is an apocalyptic number.

It is an amenable number.

71214609 is a deficient number, since it is larger than the sum of its proper divisors (23738207).

71214609 is a wasteful number, since it uses less digits than its factorization.

71214609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23738206.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 71214609 is about 8438.8748657626. The cubic root of 71214609 is about 414.4985650302.

The spelling of 71214609 in words is "seventy-one million, two hundred fourteen thousand, six hundred nine".