4069640 has 16 divisors (see below), whose sum is σ = 9156780. Its totient is φ = 1627840.

The previous prime is 4069627. The next prime is 4069651. The reversal of 4069640 is 469604.

It can be written as a sum of positive squares in 2 ways, for example, as 3319684 + 749956 = 1822^2 + 866^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50831 + ... + 50910.

Almost surely, 2^4069640 is an apocalyptic number.

4069640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4069640 is an abundant number, since it is smaller than the sum of its proper divisors (5087140).

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

4069640 is a wasteful number, since it uses less digits than its factorization.

4069640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101752 (or 101748 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 4069640 is about 2017.3348755227. The cubic root of 4069640 is about 159.6560319004.

The spelling of 4069640 in words is "four million, sixty-nine thousand, six hundred forty".