66810106 has 8 divisors (see below), whose sum is σ = 109325664. Its totient is φ = 30368220.

The previous prime is 66810097. The next prime is 66810127. The reversal of 66810106 is 60101866.

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

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, 1518390 + ... + 1518433.

It is an arithmetic number, because the mean of its divisors is an integer number (13665708).

Almost surely, 2^66810106 is an apocalyptic number.

66810106 is a deficient number, since it is larger than the sum of its proper divisors (42515558).

66810106 is a wasteful number, since it uses less digits than its factorization.

66810106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3036836.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 66810106 is about 8173.7449189463. The cubic root of 66810106 is about 405.7707337197.

The spelling of 66810106 in words is "sixty-six million, eight hundred ten thousand, one hundred six".