689169401670 has 16 divisors (see below), whose sum is σ = 1654006564080. Its totient is φ = 183778507104.

The previous prime is 689169401663. The next prime is 689169401699. The reversal of 689169401670 is 76104961986.

It is a self number, because there is not a number n which added to its sum of digits gives 689169401670.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11486156665 + ... + 11486156724.

It is an arithmetic number, because the mean of its divisors is an integer number (103375410255).

Almost surely, 2^689169401670 is an apocalyptic number.

689169401670 is an abundant number, since it is smaller than the sum of its proper divisors (964837162410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689169401670 is a wasteful number, since it uses less digits than its factorization.

689169401670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22972313399.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 689169401670 in words is "six hundred eighty-nine billion, one hundred sixty-nine million, four hundred one thousand, six hundred seventy".