197817648 has 40 divisors (see below), whose sum is σ = 584034048. Its totient is φ = 56519232.

The previous prime is 197817647. The next prime is 197817649. The reversal of 197817648 is 846718791.

197817648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (197817647) and next prime (197817649).

It is a self number, because there is not a number n which added to its sum of digits gives 197817648.

It is not an unprimeable number, because it can be changed into a prime (197817647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294036 + ... + 294707.

Almost surely, 2^197817648 is an apocalyptic number.

It is an amenable number.

197817648 is an abundant number, since it is smaller than the sum of its proper divisors (386216400).

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

197817648 is a wasteful number, since it uses less digits than its factorization.

197817648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588761 (or 588755 counting only the distinct ones).

The product of its digits is 677376, while the sum is 51.

The square root of 197817648 is about 14064.7661907335. The cubic root of 197817648 is about 582.6686850210.

The spelling of 197817648 in words is "one hundred ninety-seven million, eight hundred seventeen thousand, six hundred forty-eight".