77310089 has 4 divisors (see below), whose sum is σ = 77702724. Its totient is φ = 76917456.

The previous prime is 77310083. The next prime is 77310091. The reversal of 77310089 is 98001377.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65885689 + 11424400 = 8117^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 77310089 - 2⁴ = 77310073 is a prime.

It is a super-2 number, since 2×77310089² = 11953699722375842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77310083) 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, 196022 + ... + 196415.

It is an arithmetic number, because the mean of its divisors is an integer number (19425681).

Almost surely, 2^77310089 is an apocalyptic number.

It is an amenable number.

77310089 is a deficient number, since it is larger than the sum of its proper divisors (392635).

77310089 is a wasteful number, since it uses less digits than its factorization.

77310089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392634.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 77310089 is about 8792.6155949183. The cubic root of 77310089 is about 426.0024116918.

The spelling of 77310089 in words is "seventy-seven million, three hundred ten thousand, eighty-nine".