71888869 has 16 divisors (see below), whose sum is σ = 85542912. Its totient is φ = 59735808.

The previous prime is 71888863. The next prime is 71888881. The reversal of 71888869 is 96888817.

It is a cyclic number.

It is not a de Polignac number, because 71888869 - 2⁷ = 71888741 is a prime.

It is a super-2 number, since 2×71888869² = 10336018972198322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71888863) 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, 1989 + ... + 12154.

It is an arithmetic number, because the mean of its divisors is an integer number (5346432).

Almost surely, 2^71888869 is an apocalyptic number.

It is an amenable number.

71888869 is a deficient number, since it is larger than the sum of its proper divisors (13654043).

71888869 is a wasteful number, since it uses less digits than its factorization.

71888869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14196.

The product of its digits is 1548288, while the sum is 55.

The square root of 71888869 is about 8478.7303884485. The cubic root of 71888869 is about 415.8026156945.

The spelling of 71888869 in words is "seventy-one million, eight hundred eighty-eight thousand, eight hundred sixty-nine".