1339664 has 20 divisors (see below), whose sum is σ = 2624460. Its totient is φ = 662400.

The previous prime is 1339661. The next prime is 1339669. The reversal of 1339664 is 4669331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1081600 + 258064 = 1040^2 + 508^2 .

It is a d-powerful number, because it can be written as 1 + 3⁷ + 3⁷ + 9⁴ + 6³ + 6⁷ + 4¹⁰ .

It is a self number, because there is not a number n which added to its sum of digits gives 1339664.

It is not an unprimeable number, because it can be changed into a prime (1339661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1202 + ... + 2030.

It is an arithmetic number, because the mean of its divisors is an integer number (131223).

2^1339664 is an apocalyptic number.

It is an amenable number.

1339664 is a deficient number, since it is larger than the sum of its proper divisors (1284796).

1339664 is a wasteful number, since it uses less digits than its factorization.

1339664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938 (or 932 counting only the distinct ones).

The product of its digits is 11664, while the sum is 32.

The square root of 1339664 is about 1157.4385512847. The cubic root of 1339664 is about 110.2381616685.

The spelling of 1339664 in words is "one million, three hundred thirty-nine thousand, six hundred sixty-four".