7656413 has 2 divisors, whose sum is σ = 7656414. Its totient is φ = 7656412.

The previous prime is 7656379. The next prime is 7656431. The reversal of 7656413 is 3146567.

Together with next prime (7656431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6461764 + 1194649 = 2542^2 + 1093^2 .

It is an emirp because it is prime and its reverse (3146567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7656413 - 2¹⁴ = 7640029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7656413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7656713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3828206 + 3828207.

It is an arithmetic number, because the mean of its divisors is an integer number (3828207).

Almost surely, 2^7656413 is an apocalyptic number.

It is an amenable number.

7656413 is a deficient number, since it is larger than the sum of its proper divisors (1).

7656413 is an equidigital number, since it uses as much as digits as its factorization.

7656413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 32.

The square root of 7656413 is about 2767.0224068482. The cubic root of 7656413 is about 197.0947777603.

The spelling of 7656413 in words is "seven million, six hundred fifty-six thousand, four hundred thirteen".