66075974 has 8 divisors (see below), whose sum is σ = 104944248. Its totient is φ = 31094560.

The previous prime is 66075943. The next prime is 66076019. The reversal of 66075974 is 47957066.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971672 + ... + 971739.

It is an arithmetic number, because the mean of its divisors is an integer number (13118031).

Almost surely, 2^66075974 is an apocalyptic number.

66075974 is a deficient number, since it is larger than the sum of its proper divisors (38868274).

66075974 is a wasteful number, since it uses less digits than its factorization.

66075974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943430.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 66075974 is about 8128.7129362526. The cubic root of 66075974 is about 404.2790078376.

The spelling of 66075974 in words is "sixty-six million, seventy-five thousand, nine hundred seventy-four".