971961772 has 6 divisors (see below), whose sum is σ = 1700933108. Its totient is φ = 485980884.

The previous prime is 971961763. The next prime is 971961773. The reversal of 971961772 is 277169179.

It is not an unprimeable number, because it can be changed into a prime (971961773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121495218 + ... + 121495225.

Almost surely, 2^971961772 is an apocalyptic number.

It is an amenable number.

971961772 is a deficient number, since it is larger than the sum of its proper divisors (728971336).

971961772 is a wasteful number, since it uses less digits than its factorization.

971961772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242990447 (or 242990445 counting only the distinct ones).

The product of its digits is 333396, while the sum is 49.

The square root of 971961772 is about 31176.3014483758. The cubic root of 971961772 is about 990.5651882764.

The spelling of 971961772 in words is "nine hundred seventy-one million, nine hundred sixty-one thousand, seven hundred seventy-two".