60989681 has 2 divisors, whose sum is σ = 60989682. Its totient is φ = 60989680.

The previous prime is 60989651. The next prime is 60989683. The reversal of 60989681 is 18698906.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34621456 + 26368225 = 5884^2 + 5135^2 .

It is a cyclic number.

It is not a de Polignac number, because 60989681 - 2²² = 56795377 is a prime.

It is a super-2 number, since 2×60989681² = 7439482376963522, which contains 22 as substring.

Together with 60989683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (60989683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30494840 + 30494841.

It is an arithmetic number, because the mean of its divisors is an integer number (30494841).

Almost surely, 2^60989681 is an apocalyptic number.

It is an amenable number.

60989681 is a deficient number, since it is larger than the sum of its proper divisors (1).

60989681 is an equidigital number, since it uses as much as digits as its factorization.

60989681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 60989681 is about 7809.5890416846. The cubic root of 60989681 is about 393.6275199467.

The spelling of 60989681 in words is "sixty million, nine hundred eighty-nine thousand, six hundred eighty-one".