71282617 has 4 divisors (see below), whose sum is σ = 81465856. Its totient is φ = 61099380.

The previous prime is 71282611. The next prime is 71282639. The reversal of 71282617 is 71628217.

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: 71628217 = 1013 ⋅70709.

It is a cyclic number.

It is not a de Polignac number, because 71282617 - 2¹¹ = 71280569 is a prime.

It is a super-2 number, since 2×71282617² = 10162422972737378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71282611) 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, 5091609 + ... + 5091622.

It is an arithmetic number, because the mean of its divisors is an integer number (20366464).

Almost surely, 2^71282617 is an apocalyptic number.

It is an amenable number.

71282617 is a deficient number, since it is larger than the sum of its proper divisors (10183239).

71282617 is a wasteful number, since it uses less digits than its factorization.

71282617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10183238.

The product of its digits is 9408, while the sum is 34.

The square root of 71282617 is about 8442.9033513360. The cubic root of 71282617 is about 414.6304679747.

The spelling of 71282617 in words is "seventy-one million, two hundred eighty-two thousand, six hundred seventeen".