775683072 has 132 divisors (see below), whose sum is σ = 2371998096. Its totient is φ = 243302400.

The previous prime is 775683049. The next prime is 775683091. The reversal of 775683072 is 270386577.

Added to its reverse (270386577) it gives a square (1046069649 = 32343²).

775683072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154197 + ... + 159147.

Almost surely, 2^775683072 is an apocalyptic number.

775683072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775683072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1185999048).

775683072 is an abundant number, since it is smaller than the sum of its proper divisors (1596315024).

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

775683072 is a wasteful number, since it uses less digits than its factorization.

775683072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4994 (or 4973 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The square root of 775683072 is about 27851.0874473511. The cubic root of 775683072 is about 918.8150592274.

Adding to 775683072 its reverse (270386577), we get a square (1046069649 = 32343²).

The spelling of 775683072 in words is "seven hundred seventy-five million, six hundred eighty-three thousand, seventy-two".