7666013 has 2 divisors, whose sum is σ = 7666014. Its totient is φ = 7666012.

The previous prime is 7666003. The next prime is 7666027. The reversal of 7666013 is 3106667.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6416089 + 1249924 = 2533^2 + 1118^2 .

It is an emirp because it is prime and its reverse (3106667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7666013 - 2²² = 3471709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7666003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3833006 + 3833007.

It is an arithmetic number, because the mean of its divisors is an integer number (3833007).

Almost surely, 2^7666013 is an apocalyptic number.

It is an amenable number.

7666013 is a deficient number, since it is larger than the sum of its proper divisors (1).

7666013 is an equidigital number, since it uses as much as digits as its factorization.

7666013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 7666013 is about 2768.7565801276. The cubic root of 7666013 is about 197.1771191739.

The spelling of 7666013 in words is "seven million, six hundred sixty-six thousand, thirteen".