77127105 has 16 divisors (see below), whose sum is σ = 134622144. Its totient is φ = 37394880.

The previous prime is 77127103. The next prime is 77127139. The reversal of 77127105 is 50172177.

It is not a de Polignac number, because 77127105 - 2¹ = 77127103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77127103) 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, 233554 + ... + 233883.

It is an arithmetic number, because the mean of its divisors is an integer number (8413884).

Almost surely, 2^77127105 is an apocalyptic number.

It is an amenable number.

77127105 is a deficient number, since it is larger than the sum of its proper divisors (57495039).

77127105 is a wasteful number, since it uses less digits than its factorization.

77127105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467456.

The product of its (nonzero) digits is 3430, while the sum is 30.

The square root of 77127105 is about 8782.2038805758. The cubic root of 77127105 is about 425.6660467658. Note that the first 3 decimals are identical.

The spelling of 77127105 in words is "seventy-seven million, one hundred twenty-seven thousand, one hundred five".