77700009 has 8 divisors (see below), whose sum is σ = 104199552. Its totient is φ = 51500240.

The previous prime is 77700001. The next prime is 77700023. The reversal of 77700009 is 90000777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77700009 - 2³ = 77700001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77700001) 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, 74337 + ... + 75374.

It is an arithmetic number, because the mean of its divisors is an integer number (13024944).

Almost surely, 2^77700009 is an apocalyptic number.

It is an amenable number.

77700009 is a deficient number, since it is larger than the sum of its proper divisors (26499543).

77700009 is a wasteful number, since it uses less digits than its factorization.

77700009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149887.

The product of its (nonzero) digits is 3087, while the sum is 30.

The square root of 77700009 is about 8814.7608589229. The cubic root of 77700009 is about 426.7174041090.

The spelling of 77700009 in words is "seventy-seven million, seven hundred thousand, nine".