765987616 has 48 divisors (see below), whose sum is σ = 1557057600. Its totient is φ = 370656000.

The previous prime is 765987601. The next prime is 765987631. The reversal of 765987616 is 616789567.

It is an interprime number because it is at equal distance from previous prime (765987601) and next prime (765987631).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233991 + ... + 237241.

It is an arithmetic number, because the mean of its divisors is an integer number (32438700).

Almost surely, 2^765987616 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 765987616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778528800).

765987616 is an abundant number, since it is smaller than the sum of its proper divisors (791069984).

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

765987616 is a wasteful number, since it uses less digits than its factorization.

765987616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497 (or 3489 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 55.

The square root of 765987616 is about 27676.4812792378. The cubic root of 765987616 is about 914.9708316819.

The spelling of 765987616 in words is "seven hundred sixty-five million, nine hundred eighty-seven thousand, six hundred sixteen".