66700705 has 8 divisors (see below), whose sum is σ = 80085312. Its totient is φ = 53330928.

The previous prime is 66700693. The next prime is 66700717. The reversal of 66700705 is 50700766.

It is an interprime number because it is at equal distance from previous prime (66700693) and next prime (66700717).

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

It is a cyclic number.

It is not a de Polignac number, because 66700705 - 2¹¹ = 66698657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13252 + ... + 17578.

It is an arithmetic number, because the mean of its divisors is an integer number (10010664).

Almost surely, 2^66700705 is an apocalyptic number.

It is an amenable number.

66700705 is a deficient number, since it is larger than the sum of its proper divisors (13384607).

66700705 is a wasteful number, since it uses less digits than its factorization.

66700705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7415.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 66700705 is about 8167.0499569918. The cubic root of 66700705 is about 405.5491306364.

The spelling of 66700705 in words is "sixty-six million, seven hundred thousand, seven hundred five".