1404681 has 8 divisors (see below), whose sum is σ = 1916640. Its totient is φ = 914592.

The previous prime is 1404671. The next prime is 1404709. The reversal of 1404681 is 1864041.

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

It is not a de Polignac number, because 1404681 - 2⁵ = 1404649 is a prime.

It is a super-2 number, since 2×1404681² = 3946257423522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1404671) 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, 5316 + ... + 5573.

It is an arithmetic number, because the mean of its divisors is an integer number (239580).

2^1404681 is an apocalyptic number.

It is an amenable number.

1404681 is a deficient number, since it is larger than the sum of its proper divisors (511959).

1404681 is a wasteful number, since it uses less digits than its factorization.

1404681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10935.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1404681 is about 1185.1923894457. The cubic root of 1404681 is about 111.9934360524.

The spelling of 1404681 in words is "one million, four hundred four thousand, six hundred eighty-one".