66969874 has 8 divisors (see below), whose sum is σ = 103918860. Its totient is φ = 32330256.

The previous prime is 66969871. The next prime is 66969893. The reversal of 66969874 is 47896966.

It can be written as a sum of positive squares in 2 ways, for example, as 66341025 + 628849 = 8145^2 + 793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66969871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577269 + ... + 577384.

Almost surely, 2^66969874 is an apocalyptic number.

66969874 is a deficient number, since it is larger than the sum of its proper divisors (36948986).

66969874 is a wasteful number, since it uses less digits than its factorization.

66969874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154684.

The product of its digits is 3919104, while the sum is 55.

The square root of 66969874 is about 8183.5123266236. The cubic root of 66969874 is about 406.0939261929.

The spelling of 66969874 in words is "sixty-six million, nine hundred sixty-nine thousand, eight hundred seventy-four".