60646661 has 2 divisors, whose sum is σ = 60646662. Its totient is φ = 60646660.

The previous prime is 60646639. The next prime is 60646679. The reversal of 60646661 is 16664606.

60646661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48916036 + 11730625 = 6994^2 + 3425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60646661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60646601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30323330 + 30323331.

It is an arithmetic number, because the mean of its divisors is an integer number (30323331).

Almost surely, 2^60646661 is an apocalyptic number.

It is an amenable number.

60646661 is a deficient number, since it is larger than the sum of its proper divisors (1).

60646661 is an equidigital number, since it uses as much as digits as its factorization.

60646661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 60646661 is about 7787.5966125628. The cubic root of 60646661 is about 392.8881815571. Note that the first 3 decimals are identical.

The spelling of 60646661 in words is "sixty million, six hundred forty-six thousand, six hundred sixty-one".