775066140 has 72 divisors (see below), whose sum is σ = 2357999280. Its totient is φ = 206072064.

The previous prime is 775066133. The next prime is 775066153. The reversal of 775066140 is 41660577.

775066140 is a `hidden beast` number, since 7 + 7 + 506 + 6 + 140 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 775066095 and 775066104.

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 23 ways as a sum of consecutive naturals, for example, 56256 + ... + 68664.

It is an arithmetic number, because the mean of its divisors is an integer number (32749990).

Almost surely, 2^775066140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775066140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1178999640).

775066140 is an abundant number, since it is smaller than the sum of its proper divisors (1582933140).

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

775066140 is a wasteful number, since it uses less digits than its factorization.

775066140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12771 (or 12766 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 775066140 is about 27840.0096982742. The cubic root of 775066140 is about 918.5714044077.

The spelling of 775066140 in words is "seven hundred seventy-five million, sixty-six thousand, one hundred forty".