66106051 has 12 divisors (see below), whose sum is σ = 75171600. Its totient is φ = 58021040.

The previous prime is 66106039. The next prime is 66106067. The reversal of 66106051 is 15060166.

It is not a de Polignac number, because 66106051 - 2⁹ = 66105539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66106031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5911 + ... + 12928.

It is an arithmetic number, because the mean of its divisors is an integer number (6264300).

Almost surely, 2^66106051 is an apocalyptic number.

66106051 is a deficient number, since it is larger than the sum of its proper divisors (9065549).

66106051 is a wasteful number, since it uses less digits than its factorization.

66106051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18890 (or 18879 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 66106051 is about 8130.5627726499. The cubic root of 66106051 is about 404.3403395366.

The spelling of 66106051 in words is "sixty-six million, one hundred six thousand, fifty-one".