66660130 has 16 divisors (see below), whose sum is σ = 120092544. Its totient is φ = 26640880.

The previous prime is 66660127. The next prime is 66660131. The reversal of 66660130 is 3106666.

It is not an unprimeable number, because it can be changed into a prime (66660131) 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, 13725 + ... + 17935.

It is an arithmetic number, because the mean of its divisors is an integer number (7505784).

Almost surely, 2^66660130 is an apocalyptic number.

66660130 is a deficient number, since it is larger than the sum of its proper divisors (53432414).

66660130 is a wasteful number, since it uses less digits than its factorization.

66660130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5801.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 66660130 is about 8164.5655120159. The cubic root of 66660130 is about 405.4668801627.

Adding to 66660130 its reverse (3106666), we get a palindrome (69766796).

The spelling of 66660130 in words is "sixty-six million, six hundred sixty thousand, one hundred thirty".