197064198690 has 16 divisors (see below), whose sum is σ = 472954076928. Its totient is φ = 52550452976.

The previous prime is 197064198659. The next prime is 197064198691. The reversal of 197064198690 is 96891460791.

It is a happy number.

It is a super-2 number, since 2×197064198690² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (197064198691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3284403282 + ... + 3284403341.

It is an arithmetic number, because the mean of its divisors is an integer number (29559629808).

Almost surely, 2^197064198690 is an apocalyptic number.

197064198690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197064198690 is an abundant number, since it is smaller than the sum of its proper divisors (275889878238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197064198690 is a wasteful number, since it uses less digits than its factorization.

197064198690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6568806633.

The product of its (nonzero) digits is 5878656, while the sum is 60.

The spelling of 197064198690 in words is "one hundred ninety-seven billion, sixty-four million, one hundred ninety-eight thousand, six hundred ninety".