1345040680 has 96 divisors (see below), whose sum is σ = 3233815200. Its totient is φ = 503387136.

The previous prime is 1345040659. The next prime is 1345040693. The reversal of 1345040680 is 860405431.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3548731 + ... + 3549109.

It is an arithmetic number, because the mean of its divisors is an integer number (33685575).

Almost surely, 2^1345040680 is an apocalyptic number.

1345040680 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 1345040680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1616907600).

1345040680 is an abundant number, since it is smaller than the sum of its proper divisors (1888774520).

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

1345040680 is a wasteful number, since it uses less digits than its factorization.

1345040680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1345040680 is about 36674.7962502861. The cubic root of 1345040680 is about 1103.8544340911.

The spelling of 1345040680 in words is "one billion, three hundred forty-five million, forty thousand, six hundred eighty".