71144087 has 8 divisors (see below), whose sum is σ = 81763200. Its totient is φ = 60638904.

The previous prime is 71144077. The next prime is 71144089. The reversal of 71144087 is 78044117.

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 71144087 - 2⁴ = 71144071 is a prime.

It is a super-2 number, since 2×71144087² = 10122962230127138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71144089) 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, 27137 + ... + 29642.

It is an arithmetic number, because the mean of its divisors is an integer number (10220400).

Almost surely, 2^71144087 is an apocalyptic number.

71144087 is a deficient number, since it is larger than the sum of its proper divisors (10619113).

71144087 is a wasteful number, since it uses less digits than its factorization.

71144087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56965.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 71144087 is about 8434.6954301860. The cubic root of 71144087 is about 414.3616974103.

The spelling of 71144087 in words is "seventy-one million, one hundred forty-four thousand, eighty-seven".