197616407 has 2 divisors, whose sum is σ = 197616408. Its totient is φ = 197616406.

The previous prime is 197616403. The next prime is 197616457. The reversal of 197616407 is 704616791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197616407 - 2² = 197616403 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197616403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98808203 + 98808204.

It is an arithmetic number, because the mean of its divisors is an integer number (98808204).

Almost surely, 2^197616407 is an apocalyptic number.

197616407 is a deficient number, since it is larger than the sum of its proper divisors (1).

197616407 is an equidigital number, since it uses as much as digits as its factorization.

197616407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 197616407 is about 14057.6102876698. The cubic root of 197616407 is about 582.4710339443.

The spelling of 197616407 in words is "one hundred ninety-seven million, six hundred sixteen thousand, four hundred seven".