973497780 has 72 divisors (see below), whose sum is σ = 3001386024. Its totient is φ = 255340800.

The previous prime is 973497779. The next prime is 973497797. The reversal of 973497780 is 87794379.

973497780 is a `hidden beast` number, since 9 + 73 + 497 + 7 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 115476516 + 858021264 = 10746^2 + 29292^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33351 + ... + 55310.

It is an arithmetic number, because the mean of its divisors is an integer number (41685917).

Almost surely, 2^973497780 is an apocalyptic number.

973497780 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

973497780 is an abundant number, since it is smaller than the sum of its proper divisors (2027888244).

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

973497780 is a wasteful number, since it uses less digits than its factorization.

973497780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88737 (or 88732 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The square root of 973497780 is about 31200.9259477984. The cubic root of 973497780 is about 991.0867160799.

The spelling of 973497780 in words is "nine hundred seventy-three million, four hundred ninety-seven thousand, seven hundred eighty".