1965656 has 32 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 765600.

The previous prime is 1965647. The next prime is 1965661. The reversal of 1965656 is 6565691.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 980 + ... + 2211.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

2^1965656 is an apocalyptic number.

It is an amenable number.

1965656 is an abundant number, since it is smaller than the sum of its proper divisors (2630824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1965656 is a wasteful number, since it uses less digits than its factorization.

1965656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215 (or 3211 counting only the distinct ones).

The product of its digits is 48600, while the sum is 38.

The square root of 1965656 is about 1402.0185448132. The cubic root of 1965656 is about 125.2667583151.

The spelling of 1965656 in words is "one million, nine hundred sixty-five thousand, six hundred fifty-six".