1406865 has 16 divisors (see below), whose sum is σ = 2284416. Its totient is φ = 739200.

The previous prime is 1406861. The next prime is 1406879. The reversal of 1406865 is 5686041.

It is not a de Polignac number, because 1406865 - 2² = 1406861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1406861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405 + ... + 1725.

It is an arithmetic number, because the mean of its divisors is an integer number (142776).

2^1406865 is an apocalyptic number.

1406865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1406865 is a deficient number, since it is larger than the sum of its proper divisors (877551).

1406865 is a wasteful number, since it uses less digits than its factorization.

1406865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1406865 is about 1186.1134009866. The cubic root of 1406865 is about 112.0514485143.

The spelling of 1406865 in words is "one million, four hundred six thousand, eight hundred sixty-five".