97217807 has 2 divisors, whose sum is σ = 97217808. Its totient is φ = 97217806.

The previous prime is 97217801. The next prime is 97217819. The reversal of 97217807 is 70871279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97217807 - 2⁸ = 97217551 is a prime.

It is a Chen prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97217801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48608903 + 48608904.

It is an arithmetic number, because the mean of its divisors is an integer number (48608904).

Almost surely, 2^97217807 is an apocalyptic number.

97217807 is a deficient number, since it is larger than the sum of its proper divisors (1).

97217807 is an equidigital number, since it uses as much as digits as its factorization.

97217807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 97217807 is about 9859.9090766599. The cubic root of 97217807 is about 459.8137352362.

The spelling of 97217807 in words is "ninety-seven million, two hundred seventeen thousand, eight hundred seven".