77161269 has 16 divisors (see below), whose sum is σ = 105924672. Its totient is φ = 49939968.

The previous prime is 77161241. The next prime is 77161313. The reversal of 77161269 is 96216177.

It is not a de Polignac number, because 77161269 - 2⁵ = 77161237 is a prime.

It is a super-2 number, since 2×77161269² = 11907722867380722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77161369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12922 + ... + 17924.

It is an arithmetic number, because the mean of its divisors is an integer number (6620292).

Almost surely, 2^77161269 is an apocalyptic number.

It is an amenable number.

77161269 is a deficient number, since it is larger than the sum of its proper divisors (28763403).

77161269 is a wasteful number, since it uses less digits than its factorization.

77161269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156.

The product of its digits is 31752, while the sum is 39.

The square root of 77161269 is about 8784.1487350796. The cubic root of 77161269 is about 425.7288880895.

The spelling of 77161269 in words is "seventy-seven million, one hundred sixty-one thousand, two hundred sixty-nine".