196591567 has 2 divisors, whose sum is σ = 196591568. Its totient is φ = 196591566.

The previous prime is 196591541. The next prime is 196591627. The reversal of 196591567 is 765195691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196591567 - 2¹⁵ = 196558799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196591567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196591517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98295783 + 98295784.

It is an arithmetic number, because the mean of its divisors is an integer number (98295784).

Almost surely, 2^196591567 is an apocalyptic number.

196591567 is a deficient number, since it is larger than the sum of its proper divisors (1).

196591567 is an equidigital number, since it uses as much as digits as its factorization.

196591567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300, while the sum is 49.

The square root of 196591567 is about 14021.1114752005. Note that the first 3 decimals coincide. The cubic root of 196591567 is about 581.4623887652.

The spelling of 196591567 in words is "one hundred ninety-six million, five hundred ninety-one thousand, five hundred sixty-seven".