671115705 has 32 divisors (see below), whose sum is σ = 1158627456. Its totient is φ = 329754624.

The previous prime is 671115671. The next prime is 671115721. The reversal of 671115705 is 507511176.

It is not a de Polignac number, because 671115705 - 2¹⁰ = 671114681 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106729 + ... + 112841.

It is an arithmetic number, because the mean of its divisors is an integer number (36207108).

Almost surely, 2^671115705 is an apocalyptic number.

671115705 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

671115705 is a deficient number, since it is larger than the sum of its proper divisors (487511751).

671115705 is a wasteful number, since it uses less digits than its factorization.

671115705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6697.

The product of its (nonzero) digits is 7350, while the sum is 33.

The square root of 671115705 is about 25905.9009686982. The cubic root of 671115705 is about 875.5194542798.

The spelling of 671115705 in words is "six hundred seventy-one million, one hundred fifteen thousand, seven hundred five".