10731661 has 2 divisors, whose sum is σ = 10731662. Its totient is φ = 10731660.

The previous prime is 10731631. The next prime is 10731683. The reversal of 10731661 is 16613701.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5669161 + 5062500 = 2381^2 + 2250^2 .

It is a cyclic number.

It is not a de Polignac number, because 10731661 - 2⁵ = 10731629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10731601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5365830 + 5365831.

It is an arithmetic number, because the mean of its divisors is an integer number (5365831).

Almost surely, 2^10731661 is an apocalyptic number.

It is an amenable number.

10731661 is a deficient number, since it is larger than the sum of its proper divisors (1).

10731661 is an equidigital number, since it uses as much as digits as its factorization.

10731661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 10731661 is about 3275.9213971034. The cubic root of 10731661 is about 220.5746752351.

The spelling of 10731661 in words is "ten million, seven hundred thirty-one thousand, six hundred sixty-one".