97197649 has 2 divisors, whose sum is σ = 97197650. Its totient is φ = 97197648.

The previous prime is 97197629. The next prime is 97197691. The reversal of 97197649 is 94679179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62916624 + 34281025 = 7932^2 + 5855^2 .

It is a cyclic number.

It is not a de Polignac number, because 97197649 - 2⁹ = 97197137 is a prime.

It is a super-2 number, since 2×97197649² = 18894765942254402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97197596 and 97197605.

It is not a weakly prime, because it can be changed into another prime (97197629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48598824 + 48598825.

It is an arithmetic number, because the mean of its divisors is an integer number (48598825).

Almost surely, 2^97197649 is an apocalyptic number.

It is an amenable number.

97197649 is a deficient number, since it is larger than the sum of its proper divisors (1).

97197649 is an equidigital number, since it uses as much as digits as its factorization.

97197649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 52.

The square root of 97197649 is about 9858.8868032857. The cubic root of 97197649 is about 459.7819524238.

The spelling of 97197649 in words is "ninety-seven million, one hundred ninety-seven thousand, six hundred forty-nine".