16390601 has 4 divisors (see below), whose sum is σ = 17354772. Its totient is φ = 15426432.

The previous prime is 16390573. The next prime is 16390607. The reversal of 16390601 is 10609361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10609361 = 7 ⋅1515623.

It can be written as a sum of positive squares in 2 ways, for example, as 14137600 + 2253001 = 3760^2 + 1501^2 .

It is a cyclic number.

It is not a de Polignac number, because 16390601 - 2¹⁴ = 16374217 is a prime.

It is a super-2 number, since 2×16390601² = 537303602282402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16390607) 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, 482060 + ... + 482093.

It is an arithmetic number, because the mean of its divisors is an integer number (4338693).

Almost surely, 2^16390601 is an apocalyptic number.

It is an amenable number.

16390601 is a deficient number, since it is larger than the sum of its proper divisors (964171).

16390601 is an equidigital number, since it uses as much as digits as its factorization.

16390601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964170.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 16390601 is about 4048.5307211382. The cubic root of 16390601 is about 254.0182732219.

Adding to 16390601 its reverse (10609361), we get a palindrome (26999962).

The spelling of 16390601 in words is "sixteen million, three hundred ninety thousand, six hundred one".