834990768 has 140 divisors (see below), whose sum is σ = 2568873528. Its totient is φ = 261895680.

The previous prime is 834990763. The next prime is 834990773. The reversal of 834990768 is 867099438.

834990768 is a `hidden beast` number, since 83 + 499 + 0 + 76 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (834990763) and next prime (834990773).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (834990763) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 196183 + ... + 200393.

Almost surely, 2^834990768 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 834990768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1284436764).

834990768 is an abundant number, since it is smaller than the sum of its proper divisors (1733882760).

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

834990768 is a wasteful number, since it uses less digits than its factorization.

834990768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4254 (or 4233 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 834990768 is about 28896.2068098912. The cubic root of 834990768 is about 941.6594980145.

The spelling of 834990768 in words is "eight hundred thirty-four million, nine hundred ninety thousand, seven hundred sixty-eight".