66601107 has 6 divisors (see below), whose sum is σ = 96201612. Its totient is φ = 44400732.

The previous prime is 66601091. The next prime is 66601111. The reversal of 66601107 is 70110666.

It is not a de Polignac number, because 66601107 - 2⁴ = 66601091 is a prime.

66601107 is a modest number, since divided by 1107 gives 666 as remainder.

It is not an unprimeable number, because it can be changed into a prime (66601177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3700053 + ... + 3700070.

It is an arithmetic number, because the mean of its divisors is an integer number (16033602).

Almost surely, 2^66601107 is an apocalyptic number.

66601107 is a deficient number, since it is larger than the sum of its proper divisors (29600505).

66601107 is a wasteful number, since it uses less digits than its factorization.

66601107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7400129 (or 7400126 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 66601107 is about 8160.9501285083. The cubic root of 66601107 is about 405.3471737330.

The spelling of 66601107 in words is "sixty-six million, six hundred one thousand, one hundred seven".