971163987 has 8 divisors (see below), whose sum is σ = 1324999104. Its totient is φ = 632385768.

The previous prime is 971163959. The next prime is 971163989. The reversal of 971163987 is 789361179.

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

It is not a de Polignac number, because 971163987 - 2¹⁰ = 971162963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (971163989) 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, 3764073 + ... + 3764330.

It is an arithmetic number, because the mean of its divisors is an integer number (165624888).

Almost surely, 2^971163987 is an apocalyptic number.

971163987 is a deficient number, since it is larger than the sum of its proper divisors (353835117).

971163987 is a wasteful number, since it uses less digits than its factorization.

971163987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7528449.

The product of its digits is 571536, while the sum is 51.

The square root of 971163987 is about 31163.5040873134. The cubic root of 971163987 is about 990.2940958719.

The spelling of 971163987 in words is "nine hundred seventy-one million, one hundred sixty-three thousand, nine hundred eighty-seven".