6453645 has 16 divisors (see below), whose sum is σ = 11264832. Its totient is φ = 3128960.

The previous prime is 6453571. The next prime is 6453647. The reversal of 6453645 is 5463546.

6453645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6453645 - 2⁸ = 6453389 is a prime.

It is a super-3 number, since 3×6453645³ (a number of 21 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6453647) 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, 19392 + ... + 19721.

It is an arithmetic number, because the mean of its divisors is an integer number (704052).

Almost surely, 2^6453645 is an apocalyptic number.

It is an amenable number.

6453645 is a deficient number, since it is larger than the sum of its proper divisors (4811187).

6453645 is a wasteful number, since it uses less digits than its factorization.

6453645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39132.

The product of its digits is 43200, while the sum is 33.

The square root of 6453645 is about 2540.4025271598. The cubic root of 6453645 is about 186.1808565769.

Subtracting from 6453645 its reverse (5463546), we obtain a palindrome (990099).

The spelling of 6453645 in words is "six million, four hundred fifty-three thousand, six hundred forty-five".