6440332 has 6 divisors (see below), whose sum is σ = 11270588. Its totient is φ = 3220164.

The previous prime is 6440327. The next prime is 6440341. The reversal of 6440332 is 2330446.

It is a d-powerful number, because it can be written as 6⁶ + 4⁶ + 4⁶ + 0 + 3¹³ + 3¹⁴ + 2¹³ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805038 + ... + 805045.

Almost surely, 2^6440332 is an apocalyptic number.

It is an amenable number.

6440332 is a deficient number, since it is larger than the sum of its proper divisors (4830256).

6440332 is a wasteful number, since it uses less digits than its factorization.

6440332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610087 (or 1610085 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 6440332 is about 2537.7809204106. The cubic root of 6440332 is about 186.0527464388.

Adding to 6440332 its reverse (2330446), we get a palindrome (8770778).

The spelling of 6440332 in words is "six million, four hundred forty thousand, three hundred thirty-two".