770161 has 4 divisors (see below), whose sum is σ = 880192. Its totient is φ = 660132.

The previous prime is 770129. The next prime is 770167. The reversal of 770161 is 161077.

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, and also an emirpimes, since its reverse is a distinct semiprime: 161077 = 7 ⋅23011.

It is a cyclic number.

It is not a de Polignac number, because 770161 - 2⁵ = 770129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (770167) 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, 55005 + ... + 55018.

It is an arithmetic number, because the mean of its divisors is an integer number (220048).

2⁷⁷⁰¹⁶¹ is an apocalyptic number.

It is an amenable number.

770161 is a deficient number, since it is larger than the sum of its proper divisors (110031).

770161 is a wasteful number, since it uses less digits than its factorization.

770161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110030.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 770161 is about 877.5881722084. The cubic root of 770161 is about 91.6629522829.

The spelling of 770161 in words is "seven hundred seventy thousand, one hundred sixty-one".