16632061 has 4 divisors (see below), whose sum is σ = 16640224. Its totient is φ = 16623900.

The previous prime is 16632043. The next prime is 16632067. The reversal of 16632061 is 16023661.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16023661 = 41 ⋅390821.

It is a cyclic number.

It is not a de Polignac number, because 16632061 - 2⁵ = 16632029 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 (16632067) 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, 1816 + ... + 6046.

It is an arithmetic number, because the mean of its divisors is an integer number (4160056).

Almost surely, 2^16632061 is an apocalyptic number.

It is an amenable number.

16632061 is a deficient number, since it is larger than the sum of its proper divisors (8163).

16632061 is an equidigital number, since it uses as much as digits as its factorization.

16632061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8162.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 16632061 is about 4078.2423910307. The cubic root of 16632061 is about 255.2595639719.

Subtracting from 16632061 its reverse (16023661), we obtain a square (608400 = 780²).

The spelling of 16632061 in words is "sixteen million, six hundred thirty-two thousand, sixty-one".