1340456664 has 32 divisors (see below), whose sum is σ = 3548268720. Its totient is φ = 420535296.

The previous prime is 1340456659. The next prime is 1340456671. The reversal of 1340456664 is 4666540431.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642309 + ... + 1643124.

Almost surely, 2^1340456664 is an apocalyptic number.

It is an amenable number.

1340456664 is an abundant number, since it is smaller than the sum of its proper divisors (2207812056).

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

1340456664 is a wasteful number, since it uses less digits than its factorization.

1340456664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285459 (or 3285455 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 1340456664 is about 36612.2474590129. The cubic root of 1340456664 is about 1102.5989960520.

The spelling of 1340456664 in words is "one billion, three hundred forty million, four hundred fifty-six thousand, six hundred sixty-four".