66910106 has 4 divisors (see below), whose sum is σ = 100365162. Its totient is φ = 33455052.

The previous prime is 66910069. The next prime is 66910117. The reversal of 66910106 is 60101966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 52432081 + 14478025 = 7241^2 + 3805^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16727525 + ... + 16727528.

Almost surely, 2^66910106 is an apocalyptic number.

66910106 is a deficient number, since it is larger than the sum of its proper divisors (33455056).

66910106 is a wasteful number, since it uses less digits than its factorization.

66910106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33455055.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 66910106 is about 8179.8597787493. The cubic root of 66910106 is about 405.9730825740.

The spelling of 66910106 in words is "sixty-six million, nine hundred ten thousand, one hundred six".