1968777 has 12 divisors (see below), whose sum is σ = 2967744. Its totient is φ = 1255320.

The previous prime is 1968773. The next prime is 1968797. The reversal of 1968777 is 7778691.

It is a happy number.

It is not a de Polignac number, because 1968777 - 2² = 1968773 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1968773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4549 + ... + 4962.

It is an arithmetic number, because the mean of its divisors is an integer number (247312).

2^1968777 is an apocalyptic number.

It is an amenable number.

1968777 is a deficient number, since it is larger than the sum of its proper divisors (998967).

1968777 is a wasteful number, since it uses less digits than its factorization.

1968777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9540 (or 9537 counting only the distinct ones).

The product of its digits is 148176, while the sum is 45.

The square root of 1968777 is about 1403.1311414119. The cubic root of 1968777 is about 125.3330213198. Note that the first 3 decimals are identical.

The spelling of 1968777 in words is "one million, nine hundred sixty-eight thousand, seven hundred seventy-seven".