66541874 has 16 divisors (see below), whose sum is σ = 114215616. Its totient is φ = 28482000.

The previous prime is 66541831. The next prime is 66541879. The reversal of 66541874 is 47814566.

It is not an unprimeable number, because it can be changed into a prime (66541879) 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, 10649 + ... + 15699.

It is an arithmetic number, because the mean of its divisors is an integer number (7138476).

Almost surely, 2^66541874 is an apocalyptic number.

66541874 is a deficient number, since it is larger than the sum of its proper divisors (47673742).

66541874 is a wasteful number, since it uses less digits than its factorization.

66541874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001.

The product of its digits is 161280, while the sum is 41.

The square root of 66541874 is about 8157.3202707752. The cubic root of 66541874 is about 405.2269702728.

The spelling of 66541874 in words is "sixty-six million, five hundred forty-one thousand, eight hundred seventy-four".