1962689 has 2 divisors, whose sum is σ = 1962690. Its totient is φ = 1962688.

The previous prime is 1962661. The next prime is 1962707. The reversal of 1962689 is 9862691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1809025 + 153664 = 1345^2 + 392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1962689 is a prime.

It is a super-2 number, since 2×1962689² = 7704296221442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1962589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981344 + 981345.

It is an arithmetic number, because the mean of its divisors is an integer number (981345).

2^1962689 is an apocalyptic number.

It is an amenable number.

1962689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1962689 is an equidigital number, since it uses as much as digits as its factorization.

1962689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 41.

The square root of 1962689 is about 1400.9600279808. The cubic root of 1962689 is about 125.2036998706.

The spelling of 1962689 in words is "one million, nine hundred sixty-two thousand, six hundred eighty-nine".