96666621 has 4 divisors (see below), whose sum is σ = 128888832. Its totient is φ = 64444412.

The previous prime is 96666617. The next prime is 96666653. The reversal of 96666621 is 12666669.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 96666621 - 2² = 96666617 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (96666671) 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, 16111101 + ... + 16111106.

It is an arithmetic number, because the mean of its divisors is an integer number (32222208).

Almost surely, 2^96666621 is an apocalyptic number.

It is an amenable number.

96666621 is a deficient number, since it is larger than the sum of its proper divisors (32222211).

96666621 is a wasteful number, since it uses less digits than its factorization.

96666621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32222210.

The product of its digits is 139968, while the sum is 42.

The square root of 96666621 is about 9831.9184801340. The cubic root of 96666621 is about 458.9431012482.

The spelling of 96666621 in words is "ninety-six million, six hundred sixty-six thousand, six hundred twenty-one".