1197864 has 48 divisors (see below), whose sum is σ = 3294720. Its totient is φ = 393120.

The previous prime is 1197829. The next prime is 1197881. The reversal of 1197864 is 4687911.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9079 + ... + 9209.

It is an arithmetic number, because the mean of its divisors is an integer number (68640).

2^1197864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1197864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1647360).

1197864 is an abundant number, since it is smaller than the sum of its proper divisors (2096856).

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

1197864 is a wasteful number, since it uses less digits than its factorization.

1197864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 263 counting only the distinct ones).

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

The square root of 1197864 is about 1094.4697346204. The cubic root of 1197864 is about 106.2027683958.

The spelling of 1197864 in words is "one million, one hundred ninety-seven thousand, eight hundred sixty-four".