973121566 has 8 divisors (see below), whose sum is σ = 1465233264. Its totient is φ = 484710480.

The previous prime is 973121543. The next prime is 973121581. The reversal of 973121566 is 665121379.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924495 + ... + 925546.

It is an arithmetic number, because the mean of its divisors is an integer number (183154158).

Almost surely, 2^973121566 is an apocalyptic number.

973121566 is a deficient number, since it is larger than the sum of its proper divisors (492111698).

973121566 is a wasteful number, since it uses less digits than its factorization.

973121566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850306.

The product of its digits is 68040, while the sum is 40.

The square root of 973121566 is about 31194.8964736221. The cubic root of 973121566 is about 990.9590291804.

The spelling of 973121566 in words is "nine hundred seventy-three million, one hundred twenty-one thousand, five hundred sixty-six".