70066666 has 8 divisors (see below), whose sum is σ = 105238980. Its totient is φ = 34987008.

The previous prime is 70066621. The next prime is 70066669. The reversal of 70066666 is 66666007.

It can be written as a sum of positive squares in 2 ways, for example, as 69472225 + 594441 = 8335^2 + 771^2 .

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

70066666 is a modest number, since divided by 66666 gives 700 as remainder.

It is not an unprimeable number, because it can be changed into a prime (70066669) 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, 21241 + ... + 24316.

Almost surely, 2^70066666 is an apocalyptic number.

70066666 is a deficient number, since it is larger than the sum of its proper divisors (35172314).

70066666 is a wasteful number, since it uses less digits than its factorization.

70066666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46328.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 70066666 is about 8370.5833727405. The cubic root of 70066666 is about 412.2593216145.

The spelling of 70066666 in words is "seventy million, sixty-six thousand, six hundred sixty-six".