197679648 has 48 divisors (see below), whose sum is σ = 546225120. Its totient is φ = 62424576.

The previous prime is 197679637. The next prime is 197679649. The reversal of 197679648 is 846976791.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (197679649) 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 in 7 ways as a sum of consecutive naturals, for example, 52365 + ... + 56012.

It is an arithmetic number, because the mean of its divisors is an integer number (11379690).

Almost surely, 2^197679648 is an apocalyptic number.

It is an amenable number.

197679648 is an abundant number, since it is smaller than the sum of its proper divisors (348545472).

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

197679648 is a wasteful number, since it uses less digits than its factorization.

197679648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108409 (or 108401 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 57.

The square root of 197679648 is about 14059.8594587570. The cubic root of 197679648 is about 582.5331612452.

The spelling of 197679648 in words is "one hundred ninety-seven million, six hundred seventy-nine thousand, six hundred forty-eight".