71206613 has 8 divisors (see below), whose sum is σ = 73428768. Its totient is φ = 69017104.

The previous prime is 71206607. The next prime is 71206621. The reversal of 71206613 is 31660217.

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 71206613 - 2⁶ = 71206549 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 (71206673) 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, 3695 + ... + 12492.

It is an arithmetic number, because the mean of its divisors is an integer number (9178596).

Almost surely, 2^71206613 is an apocalyptic number.

It is an amenable number.

71206613 is a deficient number, since it is larger than the sum of its proper divisors (2222155).

71206613 is a wasteful number, since it uses less digits than its factorization.

71206613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16323.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 71206613 is about 8438.4010926241. The cubic root of 71206613 is about 414.4830511039.

The spelling of 71206613 in words is "seventy-one million, two hundred six thousand, six hundred thirteen".