1345806560 has 72 divisors (see below), whose sum is σ = 3698586360. Its totient is φ = 461416704.

The previous prime is 1345806557. The next prime is 1345806589. The reversal of 1345806560 is 656085431.

It is a super-2 number, since 2×1345806560² = 3622390593878067200, 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 11 ways as a sum of consecutive naturals, for example, 77990 + ... + 93669.

It is an arithmetic number, because the mean of its divisors is an integer number (51369255).

Almost surely, 2^1345806560 is an apocalyptic number.

1345806560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1345806560 is an abundant number, since it is smaller than the sum of its proper divisors (2352779800).

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

1345806560 is a wasteful number, since it uses less digits than its factorization.

1345806560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171688 (or 171673 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 1345806560 is about 36685.2362674687. The cubic root of 1345806560 is about 1104.0639096938.

The spelling of 1345806560 in words is "one billion, three hundred forty-five million, eight hundred six thousand, five hundred sixty".