60669649 has 2 divisors, whose sum is σ = 60669650. Its totient is φ = 60669648.

The previous prime is 60669619. The next prime is 60669659. The reversal of 60669649 is 94696606.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60450625 + 219024 = 7775^2 + 468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60669649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 60669599 and 60669608.

It is not a weakly prime, because it can be changed into another prime (60669619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30334824 + 30334825.

It is an arithmetic number, because the mean of its divisors is an integer number (30334825).

Almost surely, 2^60669649 is an apocalyptic number.

It is an amenable number.

60669649 is a deficient number, since it is larger than the sum of its proper divisors (1).

60669649 is an equidigital number, since it uses as much as digits as its factorization.

60669649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 60669649 is about 7789.0724094721. The cubic root of 60669649 is about 392.9378164557.

The spelling of 60669649 in words is "sixty million, six hundred sixty-nine thousand, six hundred forty-nine".