7503649 has 2 divisors, whose sum is σ = 7503650. Its totient is φ = 7503648.

The previous prime is 7503619. The next prime is 7503659. The reversal of 7503649 is 9463057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7317025 + 186624 = 2705^2 + 432^2 .

It is an emirp because it is prime and its reverse (9463057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7503649 - 2⁷ = 7503521 is a prime.

It is not a weakly prime, because it can be changed into another prime (7503619) 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, 3751824 + 3751825.

It is an arithmetic number, because the mean of its divisors is an integer number (3751825).

Almost surely, 2^7503649 is an apocalyptic number.

It is an amenable number.

7503649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7503649 is an equidigital number, since it uses as much as digits as its factorization.

7503649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 7503649 is about 2739.2789197159. The cubic root of 7503649 is about 195.7751221382.

The spelling of 7503649 in words is "seven million, five hundred three thousand, six hundred forty-nine".