1197816 has 32 divisors (see below), whose sum is σ = 3099600. Its totient is φ = 385280.

The previous prime is 1197799. The next prime is 1197821. The reversal of 1197816 is 6187911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165 + ... + 1556.

2^1197816 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 1197816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1549800).

1197816 is an abundant number, since it is smaller than the sum of its proper divisors (1901784).

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

1197816 is a wasteful number, since it uses less digits than its factorization.

1197816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759 (or 1755 counting only the distinct ones).

The product of its digits is 3024, while the sum is 33.

The square root of 1197816 is about 1094.4478059734. The cubic root of 1197816 is about 106.2013498149.

The spelling of 1197816 in words is "one million, one hundred ninety-seven thousand, eight hundred sixteen".