773640660 has 96 divisors (see below), whose sum is σ = 2337511680. Its totient is φ = 190052352.

The previous prime is 773640653. The next prime is 773640671. The reversal of 773640660 is 66046377.

773640660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 766236 + ... + 767244.

It is an arithmetic number, because the mean of its divisors is an integer number (24349080).

Almost surely, 2^773640660 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 773640660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168755840).

773640660 is an abundant number, since it is smaller than the sum of its proper divisors (1563871020).

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

773640660 is a wasteful number, since it uses less digits than its factorization.

773640660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017 (or 2015 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 39.

The square root of 773640660 is about 27814.3966319602. The cubic root of 773640660 is about 918.0079218610.

The spelling of 773640660 in words is "seven hundred seventy-three million, six hundred forty thousand, six hundred sixty".