78896197 has 2 divisors, whose sum is σ = 78896198. Its totient is φ = 78896196.

The previous prime is 78896183. The next prime is 78896239. The reversal of 78896197 is 79169887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77422401 + 1473796 = 8799^2 + 1214^2 .

It is a cyclic number.

It is not a de Polignac number, because 78896197 - 2¹¹ = 78894149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78896117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39448098 + 39448099.

It is an arithmetic number, because the mean of its divisors is an integer number (39448099).

Almost surely, 2^78896197 is an apocalyptic number.

It is an amenable number.

78896197 is a deficient number, since it is larger than the sum of its proper divisors (1).

78896197 is an equidigital number, since it uses as much as digits as its factorization.

78896197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 55.

The square root of 78896197 is about 8882.3531229061. The cubic root of 78896197 is about 428.8960269508.

The spelling of 78896197 in words is "seventy-eight million, eight hundred ninety-six thousand, one hundred ninety-seven".