971774613 has 12 divisors (see below), whose sum is σ = 1422903820. Its totient is φ = 638974656.

The previous prime is 971774611. The next prime is 971774651. The reversal of 971774613 is 316477179.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 491375889 + 480398724 = 22167^2 + 21918^2 .

It is not a de Polignac number, because 971774613 - 2¹ = 971774611 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971774611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 738898 + ... + 740211.

Almost surely, 2^971774613 is an apocalyptic number.

It is an amenable number.

971774613 is a deficient number, since it is larger than the sum of its proper divisors (451129207).

971774613 is a wasteful number, since it uses less digits than its factorization.

971774613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479188 (or 1479185 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 971774613 is about 31173.2996809770. The cubic root of 971774613 is about 990.5016037829.

The spelling of 971774613 in words is "nine hundred seventy-one million, seven hundred seventy-four thousand, six hundred thirteen".