97617217 has 2 divisors, whose sum is σ = 97617218. Its totient is φ = 97617216.

The previous prime is 97617209. The next prime is 97617241. The reversal of 97617217 is 71271679.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80568576 + 17048641 = 8976^2 + 4129^2 .

It is a cyclic number.

It is not a de Polignac number, because 97617217 - 2³ = 97617209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97617217.

It is not a weakly prime, because it can be changed into another prime (97617287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48808608 + 48808609.

It is an arithmetic number, because the mean of its divisors is an integer number (48808609).

Almost surely, 2^97617217 is an apocalyptic number.

It is an amenable number.

97617217 is a deficient number, since it is larger than the sum of its proper divisors (1).

97617217 is an equidigital number, since it uses as much as digits as its factorization.

97617217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37044, while the sum is 40.

The square root of 97617217 is about 9880.1425597002. The cubic root of 97617217 is about 460.4425749986.

The spelling of 97617217 in words is "ninety-seven million, six hundred seventeen thousand, two hundred seventeen".