66875930 has 32 divisors (see below), whose sum is σ = 133809408. Its totient is φ = 23857600.

The previous prime is 66875917. The next prime is 66875933. The reversal of 66875930 is 3957866.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66875933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95 + ... + 11565.

It is an arithmetic number, because the mean of its divisors is an integer number (4181544).

Almost surely, 2^66875930 is an apocalyptic number.

66875930 is an abundant number, since it is smaller than the sum of its proper divisors (66933478).

66875930 is a wasteful number, since it uses less digits than its factorization.

66875930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11542.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 66875930 is about 8177.7704785595. The cubic root of 66875930 is about 405.9039505210.

The spelling of 66875930 in words is "sixty-six million, eight hundred seventy-five thousand, nine hundred thirty".