771616340 has 48 divisors (see below), whose sum is σ = 1828673280. Its totient is φ = 270910080.

The previous prime is 771616327. The next prime is 771616361. The reversal of 771616340 is 43616177.

It is a self number, because there is not a number n which added to its sum of digits gives 771616340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54092 + ... + 66851.

It is an arithmetic number, because the mean of its divisors is an integer number (38097360).

Almost surely, 2^771616340 is an apocalyptic number.

It is an amenable number.

771616340 is an abundant number, since it is smaller than the sum of its proper divisors (1057056940).

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

771616340 is a wasteful number, since it uses less digits than its factorization.

771616340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120992 (or 120990 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 771616340 is about 27777.9830081307. The cubic root of 771616340 is about 917.2065312809.

The spelling of 771616340 in words is "seven hundred seventy-one million, six hundred sixteen thousand, three hundred forty".