2660166646 has 8 divisors (see below), whose sum is σ = 4001684400. Its totient is φ = 1326271848.

The previous prime is 2660166643. The next prime is 2660166661. The reversal of 2660166646 is 6466610662.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660166643) 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, 1904866 + ... + 1906261.

It is an arithmetic number, because the mean of its divisors is an integer number (500210550).

Almost surely, 2^2660166646 is an apocalyptic number.

2660166646 is a deficient number, since it is larger than the sum of its proper divisors (1341517754).

2660166646 is a wasteful number, since it uses less digits than its factorization.

2660166646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811478.

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 2660166646 is about 51576.8033712831. The cubic root of 2660166646 is about 1385.5949163470.

The spelling of 2660166646 in words is "two billion, six hundred sixty million, one hundred sixty-six thousand, six hundred forty-six".