77700089 has 4 divisors (see below), whose sum is σ = 77751120. Its totient is φ = 77649060.

The previous prime is 77700079. The next prime is 77700121. The reversal of 77700089 is 98000777.

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 77700089 - 2²⁰ = 76651513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77700079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23159 + ... + 26300.

It is an arithmetic number, because the mean of its divisors is an integer number (19437780).

Almost surely, 2^77700089 is an apocalyptic number.

It is an amenable number.

77700089 is a deficient number, since it is larger than the sum of its proper divisors (51031).

77700089 is a wasteful number, since it uses less digits than its factorization.

77700089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51030.

The product of its (nonzero) digits is 24696, while the sum is 38.

The square root of 77700089 is about 8814.7653967647. The cubic root of 77700089 is about 426.7175505585.

The spelling of 77700089 in words is "seventy-seven million, seven hundred thousand, eighty-nine".