77987104 has 24 divisors (see below), whose sum is σ = 165348540. Its totient is φ = 35993856.

The previous prime is 77987101. The next prime is 77987111. The reversal of 77987104 is 40178977.

It can be written as a sum of positive squares in 2 ways, for example, as 77088400 + 898704 = 8780^2 + 948^2 .

It is not an unprimeable number, because it can be changed into a prime (77987101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93319 + ... + 94150.

Almost surely, 2^77987104 is an apocalyptic number.

It is an amenable number.

77987104 is an abundant number, since it is smaller than the sum of its proper divisors (87361436).

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

77987104 is a wasteful number, since it uses less digits than its factorization.

77987104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187492 (or 187484 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 77987104 is about 8831.0307439166. The cubic root of 77987104 is about 427.2423197752.

The spelling of 77987104 in words is "seventy-seven million, nine hundred eighty-seven thousand, one hundred four".