971012565 has 24 divisors (see below), whose sum is σ = 1684570680. Its totient is φ = 517417344.

The previous prime is 971012561. The next prime is 971012573. The reversal of 971012565 is 565210179.

971012565 is a `hidden beast` number, since 97 + 1 + 0 + 1 + 2 + 565 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 113167044 + 857845521 = 10638^2 + 29289^2 .

It is not a de Polignac number, because 971012565 - 2² = 971012561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971012561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45691 + ... + 63479.

It is an arithmetic number, because the mean of its divisors is an integer number (70190445).

Almost surely, 2^971012565 is an apocalyptic number.

It is an amenable number.

971012565 is a deficient number, since it is larger than the sum of its proper divisors (713558115).

971012565 is a wasteful number, since it uses less digits than its factorization.

971012565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19013 (or 19010 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 971012565 is about 31161.0745161331. The cubic root of 971012565 is about 990.2426249536.

The spelling of 971012565 in words is "nine hundred seventy-one million, twelve thousand, five hundred sixty-five".