1199680 has 56 divisors (see below), whose sum is σ = 2999232. Its totient is φ = 456192.

The previous prime is 1199677. The next prime is 1199683. The reversal of 1199680 is 869911.

1199680 = T₂₀₅ + T₂₀₆ + ... + T₂₅₀.

It is an interprime number because it is at equal distance from previous prime (1199677) and next prime (1199683).

It is not an unprimeable number, because it can be changed into a prime (1199683) 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 7 ways as a sum of consecutive naturals, for example, 7279 + ... + 7441.

2^1199680 is an apocalyptic number.

1199680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1199680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499616).

1199680 is an abundant number, since it is smaller than the sum of its proper divisors (1799552).

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

1199680 is a wasteful number, since it uses less digits than its factorization.

1199680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1199680 is about 1095.2990459231. The cubic root of 1199680 is about 106.2564102246.

The spelling of 1199680 in words is "one million, one hundred ninety-nine thousand, six hundred eighty".