973090621 has 4 divisors (see below), whose sum is σ = 1006645500. Its totient is φ = 939535744.

The previous prime is 973090609. The next prime is 973090627. The reversal of 973090621 is 126090379.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 221563225 + 751527396 = 14885^2 + 27414^2 .

It is a cyclic number.

It is not a de Polignac number, because 973090621 - 2⁹ = 973090109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (973090627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16777396 + ... + 16777453.

It is an arithmetic number, because the mean of its divisors is an integer number (251661375).

Almost surely, 2^973090621 is an apocalyptic number.

It is an amenable number.

973090621 is a deficient number, since it is larger than the sum of its proper divisors (33554879).

973090621 is a wasteful number, since it uses less digits than its factorization.

973090621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33554878.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 973090621 is about 31194.4004750853. The cubic root of 973090621 is about 990.9485249936.

The spelling of 973090621 in words is "nine hundred seventy-three million, ninety thousand, six hundred twenty-one".