60067661 has 2 divisors, whose sum is σ = 60067662. Its totient is φ = 60067660.

The previous prime is 60067639. The next prime is 60067663. The reversal of 60067661 is 16676006.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36844900 + 23222761 = 6070^2 + 4819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60067661 is a prime.

Together with 60067663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60067663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30033830 + 30033831.

It is an arithmetic number, because the mean of its divisors is an integer number (30033831).

Almost surely, 2^60067661 is an apocalyptic number.

It is an amenable number.

60067661 is a deficient number, since it is larger than the sum of its proper divisors (1).

60067661 is an equidigital number, since it uses as much as digits as its factorization.

60067661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 60067661 is about 7750.3329605895. The cubic root of 60067661 is about 391.6338665355.

The spelling of 60067661 in words is "sixty million, sixty-seven thousand, six hundred sixty-one".