973447668 has 18 divisors (see below), whose sum is σ = 2460659474. Its totient is φ = 324482544.

The previous prime is 973447663. The next prime is 973447679. The reversal of 973447668 is 866744379.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 921001104 + 52446564 = 30348^2 + 7242^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (973447663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13520071 + ... + 13520142.

Almost surely, 2^973447668 is an apocalyptic number.

It is an amenable number.

973447668 is an abundant number, since it is smaller than the sum of its proper divisors (1487211806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

973447668 is a wasteful number, since it uses less digits than its factorization.

973447668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27040223 (or 27040218 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The square root of 973447668 is about 31200.1228843734. The cubic root of 973447668 is about 991.0697099840.

The spelling of 973447668 in words is "nine hundred seventy-three million, four hundred forty-seven thousand, six hundred sixty-eight".