108664649 has 2 divisors, whose sum is σ = 108664650. Its totient is φ = 108664648.

The previous prime is 108664613. The next prime is 108664669. The reversal of 108664649 is 946466801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78765625 + 29899024 = 8875^2 + 5468^2 .

It is a cyclic number.

It is not a de Polignac number, because 108664649 - 2¹² = 108660553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (108664669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54332324 + 54332325.

It is an arithmetic number, because the mean of its divisors is an integer number (54332325).

Almost surely, 2^108664649 is an apocalyptic number.

It is an amenable number.

108664649 is a deficient number, since it is larger than the sum of its proper divisors (1).

108664649 is an equidigital number, since it uses as much as digits as its factorization.

108664649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 108664649 is about 10424.2337368269. The cubic root of 108664649 is about 477.1952299859.

The spelling of 108664649 in words is "one hundred eight million, six hundred sixty-four thousand, six hundred forty-nine".