197416693 has 2 divisors, whose sum is σ = 197416694. Its totient is φ = 197416692.

The previous prime is 197416663. The next prime is 197416697. The reversal of 197416693 is 396614791.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118526769 + 78889924 = 10887^2 + 8882^2 .

It is an emirp because it is prime and its reverse (396614791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197416693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197416697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98708346 + 98708347.

It is an arithmetic number, because the mean of its divisors is an integer number (98708347).

Almost surely, 2^197416693 is an apocalyptic number.

It is an amenable number.

197416693 is a deficient number, since it is larger than the sum of its proper divisors (1).

197416693 is an equidigital number, since it uses as much as digits as its factorization.

197416693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 46.

The square root of 197416693 is about 14050.5050798895. The cubic root of 197416693 is about 582.2747499223.

The spelling of 197416693 in words is "one hundred ninety-seven million, four hundred sixteen thousand, six hundred ninety-three".