1406815 has 4 divisors (see below), whose sum is σ = 1688184. Its totient is φ = 1125448.

The previous prime is 1406807. The next prime is 1406827. The reversal of 1406815 is 5186041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1406815 - 2³ = 1406807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1406815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140677 + ... + 140686.

It is an arithmetic number, because the mean of its divisors is an integer number (422046).

2^1406815 is an apocalyptic number.

1406815 is a deficient number, since it is larger than the sum of its proper divisors (281369).

1406815 is an equidigital number, since it uses as much as digits as its factorization.

1406815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281368.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1406815 is about 1186.0923235566. The cubic root of 1406815 is about 112.0501210619.

The spelling of 1406815 in words is "one million, four hundred six thousand, eight hundred fifteen".