16632961 has 4 divisors (see below), whose sum is σ = 17508400. Its totient is φ = 15757524.

The previous prime is 16632949. The next prime is 16632997. The reversal of 16632961 is 16923661.

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 16632961 - 2⁵ = 16632929 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16632911) 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 3 ways as a sum of consecutive naturals, for example, 437691 + ... + 437728.

It is an arithmetic number, because the mean of its divisors is an integer number (4377100).

Almost surely, 2^16632961 is an apocalyptic number.

It is an amenable number.

16632961 is a deficient number, since it is larger than the sum of its proper divisors (875439).

16632961 is an equidigital number, since it uses as much as digits as its factorization.

16632961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875438.

The product of its digits is 11664, while the sum is 34.

The square root of 16632961 is about 4078.3527311894. The cubic root of 16632961 is about 255.2641681210.

It can be divided in two parts, 1663 and 2961, that added together give a square (4624 = 68²).

The spelling of 16632961 in words is "sixteen million, six hundred thirty-two thousand, nine hundred sixty-one".