1968261 has 8 divisors (see below), whose sum is σ = 2674080. Its totient is φ = 1287312.

The previous prime is 1968257. The next prime is 1968269. The reversal of 1968261 is 1628691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1968261 - 2² = 1968257 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6031 + ... + 6348.

It is an arithmetic number, because the mean of its divisors is an integer number (334260).

2^1968261 is an apocalyptic number.

It is an amenable number.

1968261 is a deficient number, since it is larger than the sum of its proper divisors (705819).

1968261 is a wasteful number, since it uses less digits than its factorization.

1968261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12435.

The product of its digits is 5184, while the sum is 33.

The square root of 1968261 is about 1402.9472548888. The cubic root of 1968261 is about 125.3220707839.

The spelling of 1968261 in words is "one million, nine hundred sixty-eight thousand, two hundred sixty-one".