7666007 has 4 divisors (see below), whose sum is σ = 7745136. Its totient is φ = 7586880.

The previous prime is 7666003. The next prime is 7666013. The reversal of 7666007 is 7006667.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7666007 - 2² = 7666003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39419 + ... + 39612.

It is an arithmetic number, because the mean of its divisors is an integer number (1936284).

Almost surely, 2^7666007 is an apocalyptic number.

7666007 is a deficient number, since it is larger than the sum of its proper divisors (79129).

7666007 is an equidigital number, since it uses as much as digits as its factorization.

7666007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79128.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 7666007 is about 2768.7554966085. The cubic root of 7666007 is about 197.1770677320.

The spelling of 7666007 in words is "seven million, six hundred sixty-six thousand, seven".