77850648 has 96 divisors (see below), whose sum is σ = 217395360. Its totient is φ = 25159680.

The previous prime is 77850623. The next prime is 77850649. The reversal of 77850648 is 84605877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77850649) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 495786 + ... + 495942.

It is an arithmetic number, because the mean of its divisors is an integer number (2264535).

Almost surely, 2^77850648 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 77850648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108697680).

77850648 is an abundant number, since it is smaller than the sum of its proper divisors (139544712).

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

77850648 is a wasteful number, since it uses less digits than its factorization.

77850648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 77850648 is about 8823.3014229369. The cubic root of 77850648 is about 426.9929887493.

The spelling of 77850648 in words is "seventy-seven million, eight hundred fifty thousand, six hundred forty-eight".