1968977 has 2 divisors, whose sum is σ = 1968978. Its totient is φ = 1968976.

The previous prime is 1968919. The next prime is 1968979. The reversal of 1968977 is 7798691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1256641 + 712336 = 1121^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 1968977 - 2⁸ = 1968721 is a prime.

Together with 1968979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1968979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984488 + 984489.

It is an arithmetic number, because the mean of its divisors is an integer number (984489).

2^1968977 is an apocalyptic number.

It is an amenable number.

1968977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968977 is an equidigital number, since it uses as much as digits as its factorization.

1968977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 47.

The square root of 1968977 is about 1403.2024087779. The cubic root of 1968977 is about 125.3372651991.

The spelling of 1968977 in words is "one million, nine hundred sixty-eight thousand, nine hundred seventy-seven".