770139 has 6 divisors (see below), whose sum is σ = 1112436. Its totient is φ = 513420.

The previous prime is 770129. The next prime is 770167. The reversal of 770139 is 931077.

770139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 770139 - 2⁴ = 770123 is a prime.

It is a super-2 number, since 2×770139² = 1186228158642, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 770139.

It is not an unprimeable number, because it can be changed into a prime (770129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42777 + ... + 42794.

It is an arithmetic number, because the mean of its divisors is an integer number (185406).

2⁷⁷⁰¹³⁹ is an apocalyptic number.

770139 is a deficient number, since it is larger than the sum of its proper divisors (342297).

770139 is a wasteful number, since it uses less digits than its factorization.

770139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85577 (or 85574 counting only the distinct ones).

The product of its (nonzero) digits is 1323, while the sum is 27.

The square root of 770139 is about 877.5756377658. The cubic root of 770139 is about 91.6620794766.

It can be divided in two parts, 770 and 139, that added together give a palindrome (909).

The spelling of 770139 in words is "seven hundred seventy thousand, one hundred thirty-nine".