1187968 has 16 divisors (see below), whose sum is σ = 2366910. Its totient is φ = 593920.

The previous prime is 1187947. The next prime is 1187981. The reversal of 1187968 is 8697811.

It can be written as a sum of positive squares in only one way, i.e., 788544 + 399424 = 888^2 + 632^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×1187968² = 2822535938048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1187968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4513 + ... + 4768.

2^1187968 is an apocalyptic number.

It is an amenable number.

1187968 is a deficient number, since it is larger than the sum of its proper divisors (1178942).

1187968 is an frugal number, since it uses more digits than its factorization.

1187968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9295 (or 9283 counting only the distinct ones).

The product of its digits is 24192, while the sum is 40.

The square root of 1187968 is about 1089.9394478594. The cubic root of 1187968 is about 105.9094991157.

The spelling of 1187968 in words is "one million, one hundred eighty-seven thousand, nine hundred sixty-eight".