2061666708 has 12 divisors (see below), whose sum is σ = 4810555680. Its totient is φ = 687222232.

The previous prime is 2061666701. The next prime is 2061666727. The reversal of 2061666708 is 8076661602.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2061666708² = 8500939229751114528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2061666708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061666701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85902768 + ... + 85902791.

It is an arithmetic number, because the mean of its divisors is an integer number (400879640).

Almost surely, 2^2061666708 is an apocalyptic number.

It is an amenable number.

2061666708 is an abundant number, since it is smaller than the sum of its proper divisors (2748888972).

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

2061666708 is a wasteful number, since it uses less digits than its factorization.

2061666708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171805566 (or 171805564 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 2061666708 is about 45405.5801416522. The cubic root of 2061666708 is about 1272.7393920225.

The spelling of 2061666708 in words is "two billion, sixty-one million, six hundred sixty-six thousand, seven hundred eight".