1768772660 has 12 divisors (see below), whose sum is σ = 3714422628. Its totient is φ = 707509056.

The previous prime is 1768772641. The next prime is 1768772683. The reversal of 1768772660 is 662778671.

It can be written as a sum of positive squares in 2 ways, for example, as 611276176 + 1157496484 = 24724^2 + 34022^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1768772599 and 1768772608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44219297 + ... + 44219336.

It is an arithmetic number, because the mean of its divisors is an integer number (309535219).

Almost surely, 2^1768772660 is an apocalyptic number.

1768772660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1768772660 is an abundant number, since it is smaller than the sum of its proper divisors (1945649968).

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

1768772660 is a wasteful number, since it uses less digits than its factorization.

1768772660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88438642 (or 88438640 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 50.

The square root of 1768772660 is about 42056.7790017258. The cubic root of 1768772660 is about 1209.3648420694.

The spelling of 1768772660 in words is "one billion, seven hundred sixty-eight million, seven hundred seventy-two thousand, six hundred sixty".