77404804 has 27 divisors (see below), whose sum is σ = 139745893. Its totient is φ = 37514672.

The previous prime is 77404771. The next prime is 77404807. The reversal of 77404804 is 40840477.

The square root of 77404804 is 8798.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 55800900 + 21603904 = 7470^2 + 4648^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77404804.

It is not an unprimeable number, because it can be changed into a prime (77404807) 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 8 ways as a sum of consecutive naturals, for example, 932547 + ... + 932629.

Almost surely, 2^77404804 is an apocalyptic number.

77404804 is the 8798-th square number.

It is an amenable number.

77404804 is a deficient number, since it is larger than the sum of its proper divisors (62341089).

77404804 is an equidigital number, since it uses as much as digits as its factorization.

77404804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The cubic root of 77404804 is about 426.1763103064.

It can be divided in two parts, 7740 and 4804, that added together give a square (12544 = 112²).

The spelling of 77404804 in words is "seventy-seven million, four hundred four thousand, eight hundred four".