1340365664 has 48 divisors (see below), whose sum is σ = 3003920640. Its totient is φ = 582764160.

The previous prime is 1340365657. The next prime is 1340365681. The reversal of 1340365664 is 4665630431.

It is a super-2 number, since 2×1340365664² = 3593160226460321792, which contains 22 as substring.

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, 74684 + ... + 90875.

It is an arithmetic number, because the mean of its divisors is an integer number (62581680).

Almost surely, 2^1340365664 is an apocalyptic number.

It is an amenable number.

1340365664 is an abundant number, since it is smaller than the sum of its proper divisors (1663554976).

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

1340365664 is a wasteful number, since it uses less digits than its factorization.

1340365664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165603 (or 165595 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 1340365664 is about 36611.0046843842. The cubic root of 1340365664 is about 1102.5740446600.

The spelling of 1340365664 in words is "one billion, three hundred forty million, three hundred sixty-five thousand, six hundred sixty-four".