16801601 has 4 divisors (see below), whose sum is σ = 16810752. Its totient is φ = 16792452.

The previous prime is 16801591. The next prime is 16801621. The reversal of 16801601 is 10610861.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 16801601 - 2⁶ = 16801537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16801621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761 + ... + 5846.

It is an arithmetic number, because the mean of its divisors is an integer number (4202688).

Almost surely, 2^16801601 is an apocalyptic number.

It is an amenable number.

16801601 is a deficient number, since it is larger than the sum of its proper divisors (9151).

16801601 is an equidigital number, since it uses as much as digits as its factorization.

16801601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9150.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 16801601 is about 4098.9756037332. The cubic root of 16801601 is about 256.1239684821.

The spelling of 16801601 in words is "sixteen million, eight hundred one thousand, six hundred one".