660106406 has 8 divisors (see below), whose sum is σ = 994105224. Its totient is φ = 328738000.

The previous prime is 660106397. The next prime is 660106409. The reversal of 660106406 is 604601066.

660106406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (660106409) 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, 656975 + ... + 657978.

It is an arithmetic number, because the mean of its divisors is an integer number (124263153).

Almost surely, 2^660106406 is an apocalyptic number.

660106406 is a deficient number, since it is larger than the sum of its proper divisors (333998818).

660106406 is a wasteful number, since it uses less digits than its factorization.

660106406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315206.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 660106406 is about 25692.5359978341. The cubic root of 660106406 is about 870.7055561571.

The spelling of 660106406 in words is "six hundred sixty million, one hundred six thousand, four hundred six".