71530689 has 8 divisors (see below), whose sum is σ = 95451840. Its totient is φ = 47648336.

The previous prime is 71530681. The next prime is 71530717. The reversal of 71530689 is 98603517.

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 71530689 - 2³ = 71530681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71530681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5082 + ... + 12995.

It is an arithmetic number, because the mean of its divisors is an integer number (11931480).

Almost surely, 2^71530689 is an apocalyptic number.

It is an amenable number.

71530689 is a deficient number, since it is larger than the sum of its proper divisors (23921151).

71530689 is a wasteful number, since it uses less digits than its factorization.

71530689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19399.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 71530689 is about 8457.5817465751. The cubic root of 71530689 is about 415.1108988957.

The spelling of 71530689 in words is "seventy-one million, five hundred thirty thousand, six hundred eighty-nine".