6351645 has 16 divisors (see below), whose sum is σ = 10336320. Its totient is φ = 3329664.

The previous prime is 6351629. The next prime is 6351649. The reversal of 6351645 is 5461536.

6351645 is digitally balanced in base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6351645 - 2⁴ = 6351629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6351649) 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, 2704 + ... + 4473.

It is an arithmetic number, because the mean of its divisors is an integer number (646020).

Almost surely, 2^6351645 is an apocalyptic number.

It is an amenable number.

6351645 is a deficient number, since it is larger than the sum of its proper divisors (3984675).

6351645 is a wasteful number, since it uses less digits than its factorization.

6351645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7244.

The product of its digits is 10800, while the sum is 30.

The square root of 6351645 is about 2520.2470117034. The cubic root of 6351645 is about 185.1947790264.

It can be divided in two parts, 6351 and 645, that added together give a palindrome (6996).

The spelling of 6351645 in words is "six million, three hundred fifty-one thousand, six hundred forty-five".