16627961 has 8 divisors (see below), whose sum is σ = 19149504. Its totient is φ = 14142960.

The previous prime is 16627957. The next prime is 16627973. The reversal of 16627961 is 16972661.

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 16627961 - 2² = 16627957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16627901) 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 7 ways as a sum of consecutive naturals, for example, 8150 + ... + 9983.

It is an arithmetic number, because the mean of its divisors is an integer number (2393688).

Almost surely, 2^16627961 is an apocalyptic number.

It is an amenable number.

16627961 is a deficient number, since it is larger than the sum of its proper divisors (2521543).

16627961 is a wasteful number, since it uses less digits than its factorization.

16627961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18271.

The product of its digits is 27216, while the sum is 38.

The square root of 16627961 is about 4077.7396925258. The cubic root of 16627961 is about 255.2385874130.

The spelling of 16627961 in words is "sixteen million, six hundred twenty-seven thousand, nine hundred sixty-one".