1197648 has 30 divisors (see below), whose sum is σ = 3352154. Its totient is φ = 399168.

The previous prime is 1197631. The next prime is 1197649. The reversal of 1197648 is 8467911.

1197648 is a `hidden beast` number, since 1 + 1 + 9 + 7 + 648 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 5184 = 1092^2 + 72^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4015 + ... + 4302.

2^1197648 is an apocalyptic number.

1197648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1197648 is an abundant number, since it is smaller than the sum of its proper divisors (2154506).

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

1197648 is a wasteful number, since it uses less digits than its factorization.

1197648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8331 (or 8322 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 1197648 is about 1094.3710522487. The cubic root of 1197648 is about 106.1963844833.

The spelling of 1197648 in words is "one million, one hundred ninety-seven thousand, six hundred forty-eight".