8216500693 has 2 divisors, whose sum is σ = 8216500694. Its totient is φ = 8216500692.

The previous prime is 8216500601. The next prime is 8216500711. The reversal of 8216500693 is 3960056128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8215972164 + 528529 = 90642^2 + 727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8216500693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8216500093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4108250346 + 4108250347.

It is an arithmetic number, because the mean of its divisors is an integer number (4108250347).

Almost surely, 2^8216500693 is an apocalyptic number.

It is an amenable number.

8216500693 is a deficient number, since it is larger than the sum of its proper divisors (1).

8216500693 is an equidigital number, since it uses as much as digits as its factorization.

8216500693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 8216500693 is about 90644.9154282798. The cubic root of 8216500693 is about 2017.8813761554.

The spelling of 8216500693 in words is "eight billion, two hundred sixteen million, five hundred thousand, six hundred ninety-three".