1968761 has 4 divisors (see below), whose sum is σ = 2072400. Its totient is φ = 1865124.

The previous prime is 1968751. The next prime is 1968767. The reversal of 1968761 is 1678691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1968761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51791 + ... + 51828.

It is an arithmetic number, because the mean of its divisors is an integer number (518100).

2^1968761 is an apocalyptic number.

It is an amenable number.

1968761 is a deficient number, since it is larger than the sum of its proper divisors (103639).

1968761 is a wasteful number, since it uses less digits than its factorization.

1968761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103638.

The product of its digits is 18144, while the sum is 38.

The square root of 1968761 is about 1403.1254398663. The cubic root of 1968761 is about 125.3326817971.

The spelling of 1968761 in words is "one million, nine hundred sixty-eight thousand, seven hundred sixty-one".