77003912 has 32 divisors (see below), whose sum is σ = 148025880. Its totient is φ = 37539840.

The previous prime is 77003893. The next prime is 77003917. The reversal of 77003912 is 21930077.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 67798756 + 9205156 = 8234^2 + 3034^2 .

It is not an unprimeable number, because it can be changed into a prime (77003917) 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 7 ways as a sum of consecutive naturals, for example, 81362 + ... + 82302.

Almost surely, 2^77003912 is an apocalyptic number.

It is an amenable number.

77003912 is a deficient number, since it is larger than the sum of its proper divisors (71021968).

77003912 is a wasteful number, since it uses less digits than its factorization.

77003912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 77003912 is about 8775.1872914485. The cubic root of 77003912 is about 425.4392911095.

Adding to 77003912 its reverse (21930077), we get a palindrome (98933989).

The spelling of 77003912 in words is "seventy-seven million, three thousand, nine hundred twelve".