66670370707 has 8 divisors (see below), whose sum is σ = 68525940816. Its totient is φ = 64817625312.

The previous prime is 66670370681. The next prime is 66670370737. The reversal of 66670370707 is 70707307666.

It is a happy number.

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 66670370707 - 2²⁷ = 66536152979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66670370737) 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, 658273 + ... + 752770.

It is an arithmetic number, because the mean of its divisors is an integer number (8565742602).

Almost surely, 2^66670370707 is an apocalyptic number.

66670370707 is a deficient number, since it is larger than the sum of its proper divisors (1855570109).

66670370707 is a wasteful number, since it uses less digits than its factorization.

66670370707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412357.

The product of its (nonzero) digits is 1555848, while the sum is 49.

The spelling of 66670370707 in words is "sixty-six billion, six hundred seventy million, three hundred seventy thousand, seven hundred seven".