966624121 has 4 divisors (see below), whose sum is σ = 966695332. Its totient is φ = 966552912.

The previous prime is 966624119. The next prime is 966624157. The reversal of 966624121 is 121426669.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5934096 + 960690025 = 2436^2 + 30995^2 .

It is a cyclic number.

It is not a de Polignac number, because 966624121 - 2¹ = 966624119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (966624101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8226 + ... + 44731.

It is an arithmetic number, because the mean of its divisors is an integer number (241673833).

Almost surely, 2^966624121 is an apocalyptic number.

It is an amenable number.

966624121 is a deficient number, since it is larger than the sum of its proper divisors (71211).

966624121 is a wasteful number, since it uses less digits than its factorization.

966624121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71210.

The product of its digits is 31104, while the sum is 37.

The square root of 966624121 is about 31090.5792966294. The cubic root of 966624121 is about 988.7485875050.

It can be divided in two parts, 966624 and 121, that added together give a triangular number (966745 = T₁₃₉₀).

The spelling of 966624121 in words is "nine hundred sixty-six million, six hundred twenty-four thousand, one hundred twenty-one".