4069664 has 24 divisors (see below), whose sum is σ = 8484588. Its totient is φ = 1914880.

The previous prime is 4069661. The next prime is 4069679. The reversal of 4069664 is 4669604.

It can be written as a sum of positive squares in 2 ways, for example, as 3579664 + 490000 = 1892^2 + 700^2 .

It is not an unprimeable number, because it can be changed into a prime (4069661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3197 + ... + 4284.

Almost surely, 2^4069664 is an apocalyptic number.

It is an amenable number.

4069664 is an abundant number, since it is smaller than the sum of its proper divisors (4414924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4069664 is a wasteful number, since it uses less digits than its factorization.

4069664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7508 (or 7500 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 4069664 is about 2017.3408239561. The cubic root of 4069664 is about 159.6563457478.

The spelling of 4069664 in words is "four million, sixty-nine thousand, six hundred sixty-four".