97609649 has 2 divisors, whose sum is σ = 97609650. Its totient is φ = 97609648.

The previous prime is 97609619. The next prime is 97609661. The reversal of 97609649 is 94690679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81126049 + 16483600 = 9007^2 + 4060^2 .

It is an emirp because it is prime and its reverse (94690679) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97609649 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 97609597 and 97609606.

It is not a weakly prime, because it can be changed into another prime (97609619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48804824 + 48804825.

It is an arithmetic number, because the mean of its divisors is an integer number (48804825).

Almost surely, 2^97609649 is an apocalyptic number.

It is an amenable number.

97609649 is a deficient number, since it is larger than the sum of its proper divisors (1).

97609649 is an equidigital number, since it uses as much as digits as its factorization.

97609649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 97609649 is about 9879.7595618517. The cubic root of 97609649 is about 460.4306757333.

The spelling of 97609649 in words is "ninety-seven million, six hundred nine thousand, six hundred forty-nine".