1190681 has 8 divisors (see below), whose sum is σ = 1235304. Its totient is φ = 1146880.

The previous prime is 1190671. The next prime is 1190699. The reversal of 1190681 is 1860911.

It can be written as a sum of positive squares in 4 ways, for example, as 15625 + 1175056 = 125^2 + 1084^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1190681 is a prime.

It is a super-2 number, since 2×1190681² = 2835442487522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1190681.

It is not an unprimeable number, because it can be changed into a prime (1190611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4505 + ... + 4761.

It is an arithmetic number, because the mean of its divisors is an integer number (154413).

2^1190681 is an apocalyptic number.

It is an amenable number.

1190681 is a deficient number, since it is larger than the sum of its proper divisors (44623).

1190681 is a wasteful number, since it uses less digits than its factorization.

1190681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 1190681 is about 1091.1833026582. The cubic root of 1190681 is about 105.9900607745.

The spelling of 1190681 in words is "one million, one hundred ninety thousand, six hundred eighty-one".