77793804 has 72 divisors (see below), whose sum is σ = 221726960. Its totient is φ = 23569920.

The previous prime is 77793803. The next prime is 77793817. The reversal of 77793804 is 40839777.

It is a self number, because there is not a number n which added to its sum of digits gives 77793804.

It is not an unprimeable number, because it can be changed into a prime (77793803) 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, 10092 + ... + 16044.

Almost surely, 2^77793804 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 77793804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110863480).

77793804 is an abundant number, since it is smaller than the sum of its proper divisors (143933156).

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

77793804 is a wasteful number, since it uses less digits than its factorization.

77793804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5988 (or 5969 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 77793804 is about 8820.0795914776. The cubic root of 77793804 is about 426.8890380008.

It can be divided in two parts, 77 and 793804, that added together give a square (793881 = 891²).

The spelling of 77793804 in words is "seventy-seven million, seven hundred ninety-three thousand, eight hundred four".