840625479673 has 8 divisors (see below), whose sum is σ = 960723067392. Its totient is φ = 720529950336.

The previous prime is 840625479571. The next prime is 840625479689. The reversal of 840625479673 is 376974526048.

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

It is not a de Polignac number, because 840625479673 - 2²⁵ = 840591925241 is a prime.

It is a super-2 number, since 2×840625479673² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840625479173) 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, 491736 + ... + 1386742.

It is an arithmetic number, because the mean of its divisors is an integer number (120090383424).

Almost surely, 2^840625479673 is an apocalyptic number.

It is an amenable number.

840625479673 is a deficient number, since it is larger than the sum of its proper divisors (120097587719).

840625479673 is a wasteful number, since it uses less digits than its factorization.

840625479673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029191.

The product of its (nonzero) digits is 60963840, while the sum is 61.

The spelling of 840625479673 in words is "eight hundred forty billion, six hundred twenty-five million, four hundred seventy-nine thousand, six hundred seventy-three".