66733707 has 8 divisors (see below), whose sum is σ = 89182720. Its totient is φ = 44386920.

The previous prime is 66733703. The next prime is 66733747. The reversal of 66733707 is 70733766.

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

It is not a de Polignac number, because 66733707 - 2² = 66733703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66733703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24019 + ... + 26652.

It is an arithmetic number, because the mean of its divisors is an integer number (11147840).

Almost surely, 2^66733707 is an apocalyptic number.

66733707 is a deficient number, since it is larger than the sum of its proper divisors (22449013).

66733707 is a wasteful number, since it uses less digits than its factorization.

66733707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51113.

The product of its (nonzero) digits is 111132, while the sum is 39.

The square root of 66733707 is about 8169.0701429232. The cubic root of 66733707 is about 405.6160051202.

The spelling of 66733707 in words is "sixty-six million, seven hundred thirty-three thousand, seven hundred seven".