1686768260 has 24 divisors (see below), whose sum is σ = 3548440896. Its totient is φ = 673521120.

The previous prime is 1686768257. The next prime is 1686768277. The reversal of 1686768260 is 628676861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1686768199 and 1686768208.

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, 62432 + ... + 85271.

It is an arithmetic number, because the mean of its divisors is an integer number (147851704).

Almost surely, 2^1686768260 is an apocalyptic number.

1686768260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1686768260 is an abundant number, since it is smaller than the sum of its proper divisors (1861672636).

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

1686768260 is a wasteful number, since it uses less digits than its factorization.

1686768260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148283 (or 148281 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 1686768260 is about 41070.2843915160. The cubic root of 1686768260 is about 1190.3786804161.

The spelling of 1686768260 in words is "one billion, six hundred eighty-six million, seven hundred sixty-eight thousand, two hundred sixty".