66533674 has 16 divisors (see below), whose sum is σ = 102211200. Its totient is φ = 32472720.

The previous prime is 66533671. The next prime is 66533681. The reversal of 66533674 is 47633566.

It is not an unprimeable number, because it can be changed into a prime (66533671) 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, 12352 + ... + 16900.

It is an arithmetic number, because the mean of its divisors is an integer number (6388200).

Almost surely, 2^66533674 is an apocalyptic number.

66533674 is a deficient number, since it is larger than the sum of its proper divisors (35677526).

66533674 is a wasteful number, since it uses less digits than its factorization.

66533674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725.

The product of its digits is 272160, while the sum is 40.

The square root of 66533674 is about 8156.8176392512. The cubic root of 66533674 is about 405.2103241247.

The spelling of 66533674 in words is "sixty-six million, five hundred thirty-three thousand, six hundred seventy-four".