66700406707 has 8 divisors (see below), whose sum is σ = 74456268480. Its totient is φ = 59226576360.

The previous prime is 66700406681. The next prime is 66700406743. The reversal of 66700406707 is 70760400766.

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 66700406707 - 2¹⁵ = 66700373939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (66700406807) 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, 70507357 + ... + 70508302.

It is an arithmetic number, because the mean of its divisors is an integer number (9307033560).

Almost surely, 2^66700406707 is an apocalyptic number.

66700406707 is a deficient number, since it is larger than the sum of its proper divisors (7755861773).

66700406707 is a wasteful number, since it uses less digits than its factorization.

66700406707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141015713.

The product of its (nonzero) digits is 296352, while the sum is 43.

The spelling of 66700406707 in words is "sixty-six billion, seven hundred million, four hundred six thousand, seven hundred seven".