840274671 has 8 divisors (see below), whose sum is σ = 1137088384. Its totient is φ = 551822040.

The previous prime is 840274649. The next prime is 840274679. The reversal of 840274671 is 176472048.

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

It is not a de Polignac number, because 840274671 - 2¹⁰ = 840273647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840274679) 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, 2090035 + ... + 2090436.

It is an arithmetic number, because the mean of its divisors is an integer number (142136048).

Almost surely, 2^840274671 is an apocalyptic number.

840274671 is a deficient number, since it is larger than the sum of its proper divisors (296813713).

840274671 is a wasteful number, since it uses less digits than its factorization.

840274671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180541.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 840274671 is about 28987.4916300117. The cubic root of 840274671 is about 943.6416272149.

The spelling of 840274671 in words is "eight hundred forty million, two hundred seventy-four thousand, six hundred seventy-one".