1406555 has 8 divisors (see below), whose sum is σ = 1733712. Its totient is φ = 1094688.

The previous prime is 1406549. The next prime is 1406557. The reversal of 1406555 is 5556041.

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

It is a cyclic number.

It is not a de Polignac number, because 1406555 - 2⁴ = 1406539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3617 + ... + 3986.

It is an arithmetic number, because the mean of its divisors is an integer number (216714).

2^1406555 is an apocalyptic number.

1406555 is a deficient number, since it is larger than the sum of its proper divisors (327157).

1406555 is an equidigital number, since it uses as much as digits as its factorization.

1406555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7645.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1406555 is about 1185.9827148825. The cubic root of 1406555 is about 112.0432178026.

The spelling of 1406555 in words is "one million, four hundred six thousand, five hundred fifty-five".