66842007 has 8 divisors (see below), whose sum is σ = 89236080. Its totient is φ = 44504640.

The previous prime is 66841997. The next prime is 66842029. The reversal of 66842007 is 70024866.

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

It is not a de Polignac number, because 66842007 - 2⁴ = 66841991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66842047) 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, 11344 + ... + 16197.

It is an arithmetic number, because the mean of its divisors is an integer number (11154510).

Almost surely, 2^66842007 is an apocalyptic number.

66842007 is a deficient number, since it is larger than the sum of its proper divisors (22394073).

66842007 is a wasteful number, since it uses less digits than its factorization.

66842007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28353.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 66842007 is about 8175.6961171511. The cubic root of 66842007 is about 405.8353069469.

The spelling of 66842007 in words is "sixty-six million, eight hundred forty-two thousand, seven".