973621 has 8 divisors (see below), whose sum is σ = 1080288. Its totient is φ = 870000.

The previous prime is 973597. The next prime is 973631. The reversal of 973621 is 126379.

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

It is a cyclic number.

It is not a de Polignac number, because 973621 - 2¹³ = 965429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 973621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (973631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55 + ... + 1396.

It is an arithmetic number, because the mean of its divisors is an integer number (135036).

2⁹⁷³⁶²¹ is an apocalyptic number.

It is an amenable number.

973621 is a deficient number, since it is larger than the sum of its proper divisors (106667).

973621 is a wasteful number, since it uses less digits than its factorization.

973621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523.

The product of its digits is 2268, while the sum is 28.

The square root of 973621 is about 986.7223520322. The cubic root of 973621 is about 99.1128529753.

The spelling of 973621 in words is "nine hundred seventy-three thousand, six hundred twenty-one".