71144677 has 8 divisors (see below), whose sum is σ = 75470616. Its totient is φ = 66834432.

The previous prime is 71144663. The next prime is 71144701. The reversal of 71144677 is 77644117.

It can be written as a sum of positive squares in 4 ways, for example, as 51065316 + 20079361 = 7146^2 + 4481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71144677 - 2¹¹ = 71142629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71144617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6183 + ... + 13435.

It is an arithmetic number, because the mean of its divisors is an integer number (9433827).

Almost surely, 2^71144677 is an apocalyptic number.

It is an amenable number.

71144677 is a deficient number, since it is larger than the sum of its proper divisors (4325939).

71144677 is a wasteful number, since it uses less digits than its factorization.

71144677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7847.

The product of its digits is 32928, while the sum is 37.

The square root of 71144677 is about 8434.7304047017. The cubic root of 71144677 is about 414.3628428450.

The spelling of 71144677 in words is "seventy-one million, one hundred forty-four thousand, six hundred seventy-seven".