1140681 has 8 divisors (see below), whose sum is σ = 1540480. Its totient is φ = 750672.

The previous prime is 1140679. The next prime is 1140691. The reversal of 1140681 is 1860411.

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

It is not a de Polignac number, because 1140681 - 2¹ = 1140679 is a prime.

It is a super-2 number, since 2×1140681² = 2602306287522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2170 + ... + 2643.

It is an arithmetic number, because the mean of its divisors is an integer number (192560).

2^1140681 is an apocalyptic number.

It is an amenable number.

1140681 is a deficient number, since it is larger than the sum of its proper divisors (399799).

1140681 is an equidigital number, since it uses as much as digits as its factorization.

1140681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4895.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 1140681 is about 1068.0266850599. The cubic root of 1140681 is about 104.4851897847.

The spelling of 1140681 in words is "one million, one hundred forty thousand, six hundred eighty-one".