71988567 has 8 divisors (see below), whose sum is σ = 109696896. Its totient is φ = 41136312.

The previous prime is 71988559. The next prime is 71988577. The reversal of 71988567 is 76588917.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71988567 - 2³ = 71988559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71988577) 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, 1713993 + ... + 1714034.

It is an arithmetic number, because the mean of its divisors is an integer number (13712112).

Almost surely, 2^71988567 is an apocalyptic number.

71988567 is a deficient number, since it is larger than the sum of its proper divisors (37708329).

71988567 is a wasteful number, since it uses less digits than its factorization.

71988567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428037.

The product of its digits is 846720, while the sum is 51.

The square root of 71988567 is about 8484.6076515063. The cubic root of 71988567 is about 415.9947434463.

The spelling of 71988567 in words is "seventy-one million, nine hundred eighty-eight thousand, five hundred sixty-seven".