526707661 has 2 divisors, whose sum is σ = 526707662. Its totient is φ = 526707660.

The previous prime is 526707619. The next prime is 526707677. The reversal of 526707661 is 166707625.

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., 521894025 + 4813636 = 22845^2 + 2194^2 .

It is a cyclic number.

It is not a de Polignac number, because 526707661 - 2¹⁹ = 526183373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (526707761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263353830 + 263353831.

It is an arithmetic number, because the mean of its divisors is an integer number (263353831).

Almost surely, 2^526707661 is an apocalyptic number.

It is an amenable number.

526707661 is a deficient number, since it is larger than the sum of its proper divisors (1).

526707661 is an equidigital number, since it uses as much as digits as its factorization.

526707661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 526707661 is about 22950.1124398117. The cubic root of 526707661 is about 807.5880396170.

The spelling of 526707661 in words is "five hundred twenty-six million, seven hundred seven thousand, six hundred sixty-one".