77107009 has 4 divisors (see below), whose sum is σ = 88122304. Its totient is φ = 66091716.

The previous prime is 77107007. The next prime is 77107021. The reversal of 77107009 is 90070177.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77107009 - 2¹ = 77107007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77107003) 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 3 ways as a sum of consecutive naturals, for example, 5507637 + ... + 5507650.

It is an arithmetic number, because the mean of its divisors is an integer number (22030576).

Almost surely, 2^77107009 is an apocalyptic number.

It is an amenable number.

77107009 is a deficient number, since it is larger than the sum of its proper divisors (11015295).

77107009 is a wasteful number, since it uses less digits than its factorization.

77107009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11015294.

The product of its (nonzero) digits is 3087, while the sum is 31.

The square root of 77107009 is about 8781.0596740940. The cubic root of 77107009 is about 425.6290734780.

The spelling of 77107009 in words is "seventy-seven million, one hundred seven thousand, nine".