66106372 has 12 divisors (see below), whose sum is σ = 116148816. Its totient is φ = 32921000.

The previous prime is 66106363. The next prime is 66106433. The reversal of 66106372 is 27360166.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31918 + ... + 33925.

It is an arithmetic number, because the mean of its divisors is an integer number (9679068).

Almost surely, 2^66106372 is an apocalyptic number.

It is an amenable number.

66106372 is a deficient number, since it is larger than the sum of its proper divisors (50042444).

66106372 is a wasteful number, since it uses less digits than its factorization.

66106372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66098 (or 66096 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 66106372 is about 8130.5825129569. The cubic root of 66106372 is about 404.3409940054.

The spelling of 66106372 in words is "sixty-six million, one hundred six thousand, three hundred seventy-two".