197956801 has 16 divisors (see below), whose sum is σ = 241417600. Its totient is φ = 158537088.

The previous prime is 197956783. The next prime is 197956853. The reversal of 197956801 is 108659791.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 197956801 - 2¹¹ = 197954753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197956861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486 + ... + 19903.

It is an arithmetic number, because the mean of its divisors is an integer number (15088600).

Almost surely, 2^197956801 is an apocalyptic number.

It is an amenable number.

197956801 is a deficient number, since it is larger than the sum of its proper divisors (43460799).

197956801 is a wasteful number, since it uses less digits than its factorization.

197956801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20488.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 197956801 is about 14069.7121861110. The cubic root of 197956801 is about 582.8052773020.

The spelling of 197956801 in words is "one hundred ninety-seven million, nine hundred fifty-six thousand, eight hundred one".