770770009 has 4 divisors (see below), whose sum is σ = 770892516. Its totient is φ = 770647504.

The previous prime is 770770001. The next prime is 770770037. The reversal of 770770009 is 900077077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900077077 = 4801 ⋅187477.

It can be written as a sum of positive squares in 2 ways, for example, as 108222409 + 662547600 = 10403^2 + 25740^2 .

It is a cyclic number.

It is not a de Polignac number, because 770770009 - 2³ = 770770001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 770770009.

It is not an unprimeable number, because it can be changed into a prime (770770001) 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, 51274 + ... + 64579.

It is an arithmetic number, because the mean of its divisors is an integer number (192723129).

Almost surely, 2^770770009 is an apocalyptic number.

It is an amenable number.

770770009 is a deficient number, since it is larger than the sum of its proper divisors (122507).

770770009 is a wasteful number, since it uses less digits than its factorization.

770770009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122506.

The product of its (nonzero) digits is 21609, while the sum is 37.

The square root of 770770009 is about 27762.7449831604. The cubic root of 770770009 is about 916.8710690994.

The spelling of 770770009 in words is "seven hundred seventy million, seven hundred seventy thousand, nine".