1956865 has 4 divisors (see below), whose sum is σ = 2348244. Its totient is φ = 1565488.

The previous prime is 1956859. The next prime is 1956881. The reversal of 1956865 is 5686591.

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 1385329 + 571536 = 1177^2 + 756^2 .

It is a cyclic number.

It is not a de Polignac number, because 1956865 - 2⁷ = 1956737 is a prime.

It is a Duffinian 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, 195682 + ... + 195691.

It is an arithmetic number, because the mean of its divisors is an integer number (587061).

2^1956865 is an apocalyptic number.

It is an amenable number.

1956865 is a deficient number, since it is larger than the sum of its proper divisors (391379).

1956865 is an equidigital number, since it uses as much as digits as its factorization.

1956865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391378.

The product of its digits is 64800, while the sum is 40.

The square root of 1956865 is about 1398.8799090701. The cubic root of 1956865 is about 125.0797357935.

The spelling of 1956865 in words is "one million, nine hundred fifty-six thousand, eight hundred sixty-five".