66970707 has 8 divisors (see below), whose sum is σ = 89332176. Its totient is φ = 44628192.

The previous prime is 66970699. The next prime is 66970759. The reversal of 66970707 is 70707966.

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

It is not a de Polignac number, because 66970707 - 2³ = 66970699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66970207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10653 + ... + 15729.

It is an arithmetic number, because the mean of its divisors is an integer number (11166522).

Almost surely, 2^66970707 is an apocalyptic number.

66970707 is a deficient number, since it is larger than the sum of its proper divisors (22361469).

66970707 is a wasteful number, since it uses less digits than its factorization.

66970707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9477.

The product of its (nonzero) digits is 111132, while the sum is 42.

The square root of 66970707 is about 8183.5632214824. The cubic root of 66970707 is about 406.0956099094.

The spelling of 66970707 in words is "sixty-six million, nine hundred seventy thousand, seven hundred seven".