7649641 has 2 divisors, whose sum is σ = 7649642. Its totient is φ = 7649640.

The previous prime is 7649617. The next prime is 7649651. The reversal of 7649641 is 1469467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7617600 + 32041 = 2760^2 + 179^2 .

It is an emirp because it is prime and its reverse (1469467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7649641 - 2⁷ = 7649513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7649641.

It is not a weakly prime, because it can be changed into another prime (7649651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3824820 + 3824821.

It is an arithmetic number, because the mean of its divisors is an integer number (3824821).

Almost surely, 2^7649641 is an apocalyptic number.

It is an amenable number.

7649641 is a deficient number, since it is larger than the sum of its proper divisors (1).

7649641 is an equidigital number, since it uses as much as digits as its factorization.

7649641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 7649641 is about 2765.7984380645. The cubic root of 7649641 is about 197.0366513442.

The spelling of 7649641 in words is "seven million, six hundred forty-nine thousand, six hundred forty-one".