840006071 has 8 divisors (see below), whose sum is σ = 843779904. Its totient is φ = 836241120.

The previous prime is 840006007. The next prime is 840006077. The reversal of 840006071 is 170600048.

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 840006071 - 2⁶ = 840006007 is a prime.

It is a super-2 number, since 2×840006071² = 1411220398633714082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 840006071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840006077) 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, 244850 + ... + 248256.

It is an arithmetic number, because the mean of its divisors is an integer number (105472488).

Almost surely, 2^840006071 is an apocalyptic number.

840006071 is a deficient number, since it is larger than the sum of its proper divisors (3773833).

840006071 is a wasteful number, since it uses less digits than its factorization.

840006071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 840006071 is about 28982.8582268899. The cubic root of 840006071 is about 943.5410691626.

The spelling of 840006071 in words is "eight hundred forty million, six thousand, seventy-one".