1343405664 has 36 divisors (see below), whose sum is σ = 3820310676. Its totient is φ = 447801792.

The previous prime is 1343405663. The next prime is 1343405683. The reversal of 1343405664 is 4665043431.

1343405664 is a `hidden beast` number, since 13 + 43 + 40 + 566 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343405663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2332014 + ... + 2332589.

It is an arithmetic number, because the mean of its divisors is an integer number (106119741).

Almost surely, 2^1343405664 is an apocalyptic number.

It is an amenable number.

1343405664 is an abundant number, since it is smaller than the sum of its proper divisors (2476905012).

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

1343405664 is a wasteful number, since it uses less digits than its factorization.

1343405664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4664619 (or 4664608 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 1343405664 is about 36652.4987415592. The cubic root of 1343405664 is about 1103.4069751435.

The spelling of 1343405664 in words is "one billion, three hundred forty-three million, four hundred five thousand, six hundred sixty-four".