2605342680 has 96 divisors (see below), whose sum is σ = 8473664160. Its totient is φ = 694241280.

The previous prime is 2605342669. The next prime is 2605342699. The reversal of 2605342680 is 862435062.

2605342680 is a `hidden beast` number, since 2 + 60 + 534 + 2 + 68 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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, 932085 + ... + 934875.

It is an arithmetic number, because the mean of its divisors is an integer number (88267335).

Almost surely, 2^2605342680 is an apocalyptic number.

2605342680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605342680 is an abundant number, since it is smaller than the sum of its proper divisors (5868321480).

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

2605342680 is a wasteful number, since it uses less digits than its factorization.

2605342680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5401 (or 5394 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 2605342680 is about 51042.5575378037. The cubic root of 2605342680 is about 1376.0100884311.

The spelling of 2605342680 in words is "two billion, six hundred five million, three hundred forty-two thousand, six hundred eighty".