1345654680 has 64 divisors (see below), whose sum is σ = 4050224640. Its totient is φ = 357662592.

The previous prime is 1345654631. The next prime is 1345654711. The reversal of 1345654680 is 864565431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18577 + ... + 55103.

It is an arithmetic number, because the mean of its divisors is an integer number (63284760).

Almost surely, 2^1345654680 is an apocalyptic number.

1345654680 is a gapful number since it is divisible by the number (10) 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 1345654680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2025112320).

1345654680 is an abundant number, since it is smaller than the sum of its proper divisors (2704569960).

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

1345654680 is a wasteful number, since it uses less digits than its factorization.

1345654680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36848 (or 36844 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 1345654680 is about 36683.1661665129. The cubic root of 1345654680 is about 1104.0223753604.

The spelling of 1345654680 in words is "one billion, three hundred forty-five million, six hundred fifty-four thousand, six hundred eighty".