71023689 has 16 divisors (see below), whose sum is σ = 114786240. Its totient is φ = 43044480.

The previous prime is 71023679. The next prime is 71023699. The reversal of 71023689 is 98632017.

It is an interprime number because it is at equal distance from previous prime (71023679) and next prime (71023699).

It is not a de Polignac number, because 71023689 - 2⁹ = 71023177 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (71023649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119272 + ... + 119865.

It is an arithmetic number, because the mean of its divisors is an integer number (7174140).

Almost surely, 2^71023689 is an apocalyptic number.

It is an amenable number.

71023689 is a deficient number, since it is larger than the sum of its proper divisors (43762551).

71023689 is a wasteful number, since it uses less digits than its factorization.

71023689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239157 (or 239151 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 71023689 is about 8427.5553394801. Note that the first 3 decimals coincide. The cubic root of 71023689 is about 414.1278223246.

The spelling of 71023689 in words is "seventy-one million, twenty-three thousand, six hundred eighty-nine".