2660166635 has 12 divisors (see below), whose sum is σ = 3713375808. Its totient is φ = 1824114096.

The previous prime is 2660166601. The next prime is 2660166643. The reversal of 2660166635 is 5366610662.

It is a happy number.

It is not a de Polignac number, because 2660166635 - 2¹⁸ = 2659904491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2660166592 and 2660166601.

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, 5428667 + ... + 5429156.

It is an arithmetic number, because the mean of its divisors is an integer number (309447984).

Almost surely, 2^2660166635 is an apocalyptic number.

2660166635 is a deficient number, since it is larger than the sum of its proper divisors (1053209173).

2660166635 is a wasteful number, since it uses less digits than its factorization.

2660166635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10857842 (or 10857835 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 2660166635 is about 51576.8032646460. The cubic root of 2660166635 is about 1385.5949144371.

The spelling of 2660166635 in words is "two billion, six hundred sixty million, one hundred sixty-six thousand, six hundred thirty-five".