196673557 has 2 divisors, whose sum is σ = 196673558. Its totient is φ = 196673556.

The previous prime is 196673539. The next prime is 196673567. The reversal of 196673557 is 755376691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196168036 + 505521 = 14006^2 + 711^2 .

It is a cyclic number.

It is not a de Polignac number, because 196673557 - 2¹¹ = 196671509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196673557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196673507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98336778 + 98336779.

It is an arithmetic number, because the mean of its divisors is an integer number (98336779).

Almost surely, 2^196673557 is an apocalyptic number.

It is an amenable number.

196673557 is a deficient number, since it is larger than the sum of its proper divisors (1).

196673557 is an equidigital number, since it uses as much as digits as its factorization.

196673557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1190700, while the sum is 49.

The square root of 196673557 is about 14024.0349757122. The cubic root of 196673557 is about 581.5432119593.

The spelling of 196673557 in words is "one hundred ninety-six million, six hundred seventy-three thousand, five hundred fifty-seven".