60808661 has 2 divisors, whose sum is σ = 60808662. Its totient is φ = 60808660.

The previous prime is 60808651. The next prime is 60808663. The reversal of 60808661 is 16680806.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43428100 + 17380561 = 6590^2 + 4169^2 .

It is a cyclic number.

It is not a de Polignac number, because 60808661 - 2¹⁸ = 60546517 is a prime.

It is a super-2 number, since 2×60808661² = 7395386505225842, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 60808663, it forms a pair of twin primes.

It is a Chen 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 (60808663) 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, 30404330 + 30404331.

It is an arithmetic number, because the mean of its divisors is an integer number (30404331).

Almost surely, 2^60808661 is an apocalyptic number.

It is an amenable number.

60808661 is a deficient number, since it is larger than the sum of its proper divisors (1).

60808661 is an equidigital number, since it uses as much as digits as its factorization.

60808661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 60808661 is about 7797.9908309769. The cubic root of 60808661 is about 393.2376995466.

It can be divided in two parts, 6080 and 8661, that added together give a palindrome (14741).

The spelling of 60808661 in words is "sixty million, eight hundred eight thousand, six hundred sixty-one".