750661 has 2 divisors, whose sum is σ = 750662. Its totient is φ = 750660.

The previous prime is 750653. The next prime is 750667. The reversal of 750661 is 166057.

750661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 664225 + 86436 = 815^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 750661 - 2³ = 750653 is a prime.

It is an Ulam number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (750667) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 375330 + 375331.

It is an arithmetic number, because the mean of its divisors is an integer number (375331).

2⁷⁵⁰⁶⁶¹ is an apocalyptic number.

It is an amenable number.

750661 is a deficient number, since it is larger than the sum of its proper divisors (1).

750661 is an equidigital number, since it uses as much as digits as its factorization.

750661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 750661 is about 866.4069482639. The cubic root of 750661 is about 90.8827132866.

The spelling of 750661 in words is "seven hundred fifty thousand, six hundred sixty-one".