2145668606 has 8 divisors (see below), whose sum is σ = 3219240000. Its totient is φ = 1072588608.

The previous prime is 2145668599. The next prime is 2145668641. The reversal of 2145668606 is 6068665412.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111731 + ... + 129518.

It is an arithmetic number, because the mean of its divisors is an integer number (402405000).

Almost surely, 2^2145668606 is an apocalyptic number.

2145668606 is a deficient number, since it is larger than the sum of its proper divisors (1073571394).

2145668606 is a wasteful number, since it uses less digits than its factorization.

2145668606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245698.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 2145668606 is about 46321.3623072552. The cubic root of 2145668606 is about 1289.7955740403.

The spelling of 2145668606 in words is "two billion, one hundred forty-five million, six hundred sixty-eight thousand, six hundred six".