66774122 has 32 divisors (see below), whose sum is σ = 106900992. Its totient is φ = 31238784.

The previous prime is 66774109. The next prime is 66774157. The reversal of 66774122 is 22147766.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253763 + ... + 254025.

It is an arithmetic number, because the mean of its divisors is an integer number (3340656).

Almost surely, 2^66774122 is an apocalyptic number.

66774122 is a deficient number, since it is larger than the sum of its proper divisors (40126870).

66774122 is a wasteful number, since it uses less digits than its factorization.

66774122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422.

The product of its digits is 28224, while the sum is 35.

The square root of 66774122 is about 8171.5434282637. The cubic root of 66774122 is about 405.6978711088.

The spelling of 66774122 in words is "sixty-six million, seven hundred seventy-four thousand, one hundred twenty-two".