1709806680 has 48 divisors (see below), whose sum is σ = 5556872880. Its totient is φ = 455948352.

The previous prime is 1709806627. The next prime is 1709806727. The reversal of 1709806680 is 866089071.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2374372 + ... + 2375091.

It is an arithmetic number, because the mean of its divisors is an integer number (115768185).

Almost surely, 2^1709806680 is an apocalyptic number.

1709806680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1709806680 is an abundant number, since it is smaller than the sum of its proper divisors (3847066200).

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

1709806680 is a wasteful number, since it uses less digits than its factorization.

1709806680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4749480 (or 4749473 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1709806680 is about 41349.8087057244. The cubic root of 1709806680 is about 1195.7737162453.

The spelling of 1709806680 in words is "one billion, seven hundred nine million, eight hundred six thousand, six hundred eighty".