971066648 has 8 divisors (see below), whose sum is σ = 1820749980. Its totient is φ = 485533320.

The previous prime is 971066617. The next prime is 971066651. The reversal of 971066648 is 846660179.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60691658 + ... + 60691673.

Almost surely, 2^971066648 is an apocalyptic number.

It is an amenable number.

971066648 is a deficient number, since it is larger than the sum of its proper divisors (849683332).

971066648 is a wasteful number, since it uses less digits than its factorization.

971066648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121383337 (or 121383333 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 971066648 is about 31161.9423014677. The cubic root of 971066648 is about 990.2610093012.

The spelling of 971066648 in words is "nine hundred seventy-one million, sixty-six thousand, six hundred forty-eight".