66106929 has 24 divisors (see below), whose sum is σ = 103369728. Its totient is φ = 37467360.

The previous prime is 66106919. The next prime is 66106951. The reversal of 66106929 is 92960166.

It is not a de Polignac number, because 66106929 - 2⁴ = 66106913 is a prime.

It is a super-2 number, since 2×66106929² = 8740252123622082, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66106919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16899 + ... + 20439.

It is an arithmetic number, because the mean of its divisors is an integer number (4307072).

Almost surely, 2^66106929 is an apocalyptic number.

It is an amenable number.

66106929 is a deficient number, since it is larger than the sum of its proper divisors (37262799).

66106929 is a wasteful number, since it uses less digits than its factorization.

66106929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685 (or 3678 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 66106929 is about 8130.6167662730. The cubic root of 66106929 is about 404.3421296362.

The spelling of 66106929 in words is "sixty-six million, one hundred six thousand, nine hundred twenty-nine".