6435646 has 16 divisors (see below), whose sum is σ = 11142144. Its totient is φ = 2730744.

The previous prime is 6435643. The next prime is 6435691. The reversal of 6435646 is 6465346.

It is a d-powerful number, because it can be written as 6 + 4⁴ + 3⁵ + 5⁹ + 6⁵ + 4¹¹ + 6⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6435643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790 + ... + 3673.

It is an arithmetic number, because the mean of its divisors is an integer number (696384).

Almost surely, 2^6435646 is an apocalyptic number.

6435646 is a deficient number, since it is larger than the sum of its proper divisors (4706498).

6435646 is a wasteful number, since it uses less digits than its factorization.

6435646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4575.

The product of its digits is 51840, while the sum is 34.

The square root of 6435646 is about 2536.8575048670. The cubic root of 6435646 is about 186.0076113585.

The spelling of 6435646 in words is "six million, four hundred thirty-five thousand, six hundred forty-six".