775830078 has 48 divisors (see below), whose sum is σ = 1774356480. Its totient is φ = 244318032.

The previous prime is 775830061. The next prime is 775830079. The reversal of 775830078 is 870038577.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775830079) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128025 + ... + 133947.

It is an arithmetic number, because the mean of its divisors is an integer number (36965760).

Almost surely, 2^775830078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775830078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (887178240).

775830078 is an abundant number, since it is smaller than the sum of its proper divisors (998526402).

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

775830078 is a wasteful number, since it uses less digits than its factorization.

775830078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333 (or 6330 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 775830078 is about 27853.7264652326. The cubic root of 775830078 is about 918.8730995962.

The spelling of 775830078 in words is "seven hundred seventy-five million, eight hundred thirty thousand, seventy-eight".