1343775664 has 120 divisors (see below), whose sum is σ = 3292462880. Its totient is φ = 520058880.

The previous prime is 1343775617. The next prime is 1343775673. The reversal of 1343775664 is 4665773431.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3103192 + ... + 3103624.

Almost surely, 2^1343775664 is an apocalyptic number.

1343775664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1343775664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1646231440).

1343775664 is an abundant number, since it is smaller than the sum of its proper divisors (1948687216).

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

1343775664 is a wasteful number, since it uses less digits than its factorization.

1343775664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 682 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 46.

The square root of 1343775664 is about 36657.5457989211. The cubic root of 1343775664 is about 1103.5082657455.

It can be divided in two parts, 134377 and 5664, that added together give a palindrome (140041).

The spelling of 1343775664 in words is "one billion, three hundred forty-three million, seven hundred seventy-five thousand, six hundred sixty-four".