103660649 has 2 divisors, whose sum is σ = 103660650. Its totient is φ = 103660648.

The previous prime is 103660603. The next prime is 103660651. The reversal of 103660649 is 946066301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101505625 + 2155024 = 10075^2 + 1468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103660649 is a prime.

It is a super-2 number, since 2×103660649² = 21491060302202402, which contains 22 as substring.

Together with 103660651, 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 (103660549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51830324 + 51830325.

It is an arithmetic number, because the mean of its divisors is an integer number (51830325).

Almost surely, 2^103660649 is an apocalyptic number.

It is an amenable number.

103660649 is a deficient number, since it is larger than the sum of its proper divisors (1).

103660649 is an equidigital number, since it uses as much as digits as its factorization.

103660649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 103660649 is about 10181.3873809025. The cubic root of 103660649 is about 469.7548880370.

The spelling of 103660649 in words is "one hundred three million, six hundred sixty thousand, six hundred forty-nine".