97216807 has 2 divisors, whose sum is σ = 97216808. Its totient is φ = 97216806.

The previous prime is 97216771. The next prime is 97216813. The reversal of 97216807 is 70861279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97216807 - 2¹¹ = 97214759 is a prime.

It is a super-2 number, since 2×97216807² = 18902215126550498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97216807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97216817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48608403 + 48608404.

It is an arithmetic number, because the mean of its divisors is an integer number (48608404).

Almost surely, 2^97216807 is an apocalyptic number.

97216807 is a deficient number, since it is larger than the sum of its proper divisors (1).

97216807 is an equidigital number, since it uses as much as digits as its factorization.

97216807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 97216807 is about 9859.8583661227. The cubic root of 97216807 is about 459.8121586550.

The spelling of 97216807 in words is "ninety-seven million, two hundred sixteen thousand, eight hundred seven".