1966765 has 12 divisors (see below), whose sum is σ = 2422044. Its totient is φ = 1533056.

The previous prime is 1966697. The next prime is 1966787. The reversal of 1966765 is 5676691.

It can be written as a sum of positive squares in 2 ways, for example, as 281961 + 1684804 = 531^2 + 1298^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1966765 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17349 + ... + 17461.

It is an arithmetic number, because the mean of its divisors is an integer number (201837).

2^1966765 is an apocalyptic number.

It is an amenable number.

1966765 is a deficient number, since it is larger than the sum of its proper divisors (455279).

1966765 is an equidigital number, since it uses as much as digits as its factorization.

1966765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 177 counting only the distinct ones).

The product of its digits is 68040, while the sum is 40.

The square root of 1966765 is about 1402.4139902326. The cubic root of 1966765 is about 125.2903118967.

The spelling of 1966765 in words is "one million, nine hundred sixty-six thousand, seven hundred sixty-five".