66106612 has 24 divisors (see below), whose sum is σ = 135912672. Its totient is φ = 27736800.

The previous prime is 66106589. The next prime is 66106613. The reversal of 66106612 is 21660166.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66106613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57214 + ... + 58357.

It is an arithmetic number, because the mean of its divisors is an integer number (5663028).

Almost surely, 2^66106612 is an apocalyptic number.

It is an amenable number.

66106612 is an abundant number, since it is smaller than the sum of its proper divisors (69806060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66106612 is a wasteful number, since it uses less digits than its factorization.

66106612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115599 (or 115597 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 66106612 is about 8130.5972720336. The cubic root of 66106612 is about 404.3414833264.

Adding to 66106612 its reverse (21660166), we get a palindrome (87766778).

The spelling of 66106612 in words is "sixty-six million, one hundred six thousand, six hundred twelve".