59911661 has 2 divisors, whose sum is σ = 59911662. Its totient is φ = 59911660.

The previous prime is 59911627. The next prime is 59911669. The reversal of 59911661 is 16611995.

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., 59197636 + 714025 = 7694^2 + 845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-59911661 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (59911669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29955830 + 29955831.

It is an arithmetic number, because the mean of its divisors is an integer number (29955831).

Almost surely, 2^59911661 is an apocalyptic number.

It is an amenable number.

59911661 is a deficient number, since it is larger than the sum of its proper divisors (1).

59911661 is an equidigital number, since it uses as much as digits as its factorization.

59911661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 38.

The square root of 59911661 is about 7740.2623340556. The cubic root of 59911661 is about 391.2945389180.

The spelling of 59911661 in words is "fifty-nine million, nine hundred eleven thousand, six hundred sixty-one".