77148412 has 12 divisors (see below), whose sum is σ = 147283416. Its totient is φ = 35067440.

The previous prime is 77148403. The next prime is 77148413. The reversal of 77148412 is 21484177.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77148413) 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, 876643 + ... + 876730.

It is an arithmetic number, because the mean of its divisors is an integer number (12273618).

Almost surely, 2^77148412 is an apocalyptic number.

It is an amenable number.

77148412 is a deficient number, since it is larger than the sum of its proper divisors (70135004).

77148412 is a wasteful number, since it uses less digits than its factorization.

77148412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753388 (or 1753386 counting only the distinct ones).

The product of its digits is 12544, while the sum is 34.

The square root of 77148412 is about 8783.4168749980. The cubic root of 77148412 is about 425.7052410775.

The spelling of 77148412 in words is "seventy-seven million, one hundred forty-eight thousand, four hundred twelve".