7750661 has 2 divisors, whose sum is σ = 7750662. Its totient is φ = 7750660.

The previous prime is 7750597. The next prime is 7750669. The reversal of 7750661 is 1660577.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6076225 + 1674436 = 2465^2 + 1294^2 .

It is a cyclic number.

It is not a de Polignac number, because 7750661 - 2⁶ = 7750597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7750669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3875330 + 3875331.

It is an arithmetic number, because the mean of its divisors is an integer number (3875331).

Almost surely, 2^7750661 is an apocalyptic number.

It is an amenable number.

7750661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7750661 is an equidigital number, since it uses as much as digits as its factorization.

7750661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 7750661 is about 2784.0008979884. Note that the first 3 decimals coincide. The cubic root of 7750661 is about 197.9002064883.

The spelling of 7750661 in words is "seven million, seven hundred fifty thousand, six hundred sixty-one".