768689790 has 64 divisors (see below), whose sum is σ = 2032584192. Its totient is φ = 184496000.

The previous prime is 768689773. The next prime is 768689843. The reversal of 768689790 is 97986867.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21799 + ... + 44861.

It is an arithmetic number, because the mean of its divisors is an integer number (31759128).

Almost surely, 2^768689790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 768689790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016292096).

768689790 is an abundant number, since it is smaller than the sum of its proper divisors (1263894402).

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

768689790 is a wasteful number, since it uses less digits than its factorization.

768689790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23185.

The product of its (nonzero) digits is 9144576, while the sum is 60.

The square root of 768689790 is about 27725.2554541883. The cubic root of 768689790 is about 916.0454829853.

The spelling of 768689790 in words is "seven hundred sixty-eight million, six hundred eighty-nine thousand, seven hundred ninety".