1406765 has 4 divisors (see below), whose sum is σ = 1688124. Its totient is φ = 1125408.

The previous prime is 1406707. The next prime is 1406771. The reversal of 1406765 is 5676041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 521284 + 885481 = 722^2 + 941^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406765 - 2⁶ = 1406701 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 140672 + ... + 140681.

It is an arithmetic number, because the mean of its divisors is an integer number (422031).

2^1406765 is an apocalyptic number.

It is an amenable number.

1406765 is a deficient number, since it is larger than the sum of its proper divisors (281359).

1406765 is an equidigital number, since it uses as much as digits as its factorization.

1406765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281358.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1406765 is about 1186.0712457521. The cubic root of 1406765 is about 112.0487935781.

The spelling of 1406765 in words is "one million, four hundred six thousand, seven hundred sixty-five".