16634001 has 4 divisors (see below), whose sum is σ = 22178672. Its totient is φ = 11089332.

The previous prime is 16633963. The next prime is 16634017. The reversal of 16634001 is 10043661.

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 an emirpimes, since its reverse is a distinct semiprime: 10043661 = 3 ⋅3347887.

It is not a de Polignac number, because 16634001 - 2¹³ = 16625809 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 (16634071) 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, 2772331 + ... + 2772336.

It is an arithmetic number, because the mean of its divisors is an integer number (5544668).

Almost surely, 2^16634001 is an apocalyptic number.

It is an amenable number.

16634001 is a deficient number, since it is larger than the sum of its proper divisors (5544671).

16634001 is an equidigital number, since it uses as much as digits as its factorization.

16634001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544670.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 16634001 is about 4078.4802316549. The cubic root of 16634001 is about 255.2694882641.

Adding to 16634001 its reverse (10043661), we get a palindrome (26677662).

The spelling of 16634001 in words is "sixteen million, six hundred thirty-four thousand, one".