16463645 has 16 divisors (see below), whose sum is σ = 21731328. Its totient is φ = 11874240.

The previous prime is 16463641. The next prime is 16463659. The reversal of 16463645 is 54636461.

16463645 is nontrivially palindromic in base 7.

It is not a de Polignac number, because 16463645 - 2² = 16463641 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 (16463641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5807 + ... + 8163.

It is an arithmetic number, because the mean of its divisors is an integer number (1358208).

Almost surely, 2^16463645 is an apocalyptic number.

It is an amenable number.

16463645 is a deficient number, since it is larger than the sum of its proper divisors (5267683).

16463645 is a wasteful number, since it uses less digits than its factorization.

16463645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500.

The product of its digits is 51840, while the sum is 35.

The square root of 16463645 is about 4057.5417434698. The cubic root of 16463645 is about 254.3950545315.

It can be divided in two parts, 1 and 6463645, that added together give a palindrome (6463646).

The spelling of 16463645 in words is "sixteen million, four hundred sixty-three thousand, six hundred forty-five".