97649963 has 2 divisors, whose sum is σ = 97649964. Its totient is φ = 97649962.

The previous prime is 97649953. The next prime is 97650041. The reversal of 97649963 is 36994679.

It is a weak prime.

It is an emirp because it is prime and its reverse (36994679) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97649963 - 2⁶ = 97649899 is a prime.

It is not a weakly prime, because it can be changed into another prime (97649933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48824981 + 48824982.

It is an arithmetic number, because the mean of its divisors is an integer number (48824982).

Almost surely, 2^97649963 is an apocalyptic number.

97649963 is a deficient number, since it is larger than the sum of its proper divisors (1).

97649963 is an equidigital number, since it uses as much as digits as its factorization.

97649963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 53.

The square root of 97649963 is about 9881.7995830719. The cubic root of 97649963 is about 460.4940548754.

The spelling of 97649963 in words is "ninety-seven million, six hundred forty-nine thousand, nine hundred sixty-three".