775333680 has 240 divisors, whose sum is σ = 2760466176. Its totient is φ = 178196480.

The previous prime is 775333619. The next prime is 775333711. The reversal of 775333680 is 86333577.

775333680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×775333680² = 1202284630684684800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6861304 + ... + 6861416.

Almost surely, 2^775333680 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 775333680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1380233088).

775333680 is an abundant number, since it is smaller than the sum of its proper divisors (1985132496).

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

775333680 is a wasteful number, since it uses less digits than its factorization.

775333680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 42.

The square root of 775333680 is about 27844.8142389207. The cubic root of 775333680 is about 918.6770841295.

The spelling of 775333680 in words is "seven hundred seventy-five million, three hundred thirty-three thousand, six hundred eighty".