30866197 has 2 divisors, whose sum is σ = 30866198. Its totient is φ = 30866196.

The previous prime is 30866191. The next prime is 30866219. The reversal of 30866197 is 79166803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21169201 + 9696996 = 4601^2 + 3114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30866197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30866191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15433098 + 15433099.

It is an arithmetic number, because the mean of its divisors is an integer number (15433099).

Almost surely, 2^30866197 is an apocalyptic number.

It is an amenable number.

30866197 is a deficient number, since it is larger than the sum of its proper divisors (1).

30866197 is an equidigital number, since it uses as much as digits as its factorization.

30866197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 30866197 is about 5555.7355048634. The cubic root of 30866197 is about 313.6854498084.

The spelling of 30866197 in words is "thirty million, eight hundred sixty-six thousand, one hundred ninety-seven".