7507649 has 2 divisors, whose sum is σ = 7507650. Its totient is φ = 7507648.

The previous prime is 7507627. The next prime is 7507657. The reversal of 7507649 is 9467057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7507600 + 49 = 2740^2 + 7^2 .

It is an emirp because it is prime and its reverse (9467057) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7507649 - 2¹² = 7503553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7507849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3753824 + 3753825.

It is an arithmetic number, because the mean of its divisors is an integer number (3753825).

Almost surely, 2^7507649 is an apocalyptic number.

It is an amenable number.

7507649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7507649 is an equidigital number, since it uses as much as digits as its factorization.

7507649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 7507649 is about 2740.0089415912. The cubic root of 7507649 is about 195.8099034994.

It can be divided in two parts, 75076 and 49, that multiplied together give a square (3678724 = 1918²).

The spelling of 7507649 in words is "seven million, five hundred seven thousand, six hundred forty-nine".