1962661 has 2 divisors, whose sum is σ = 1962662. Its totient is φ = 1962660.

The previous prime is 1962637. The next prime is 1962689. The reversal of 1962661 is 1662691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1012036 + 950625 = 1006^2 + 975^2 .

It is a cyclic number.

It is not a de Polignac number, because 1962661 - 2¹¹ = 1960613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1962161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981330 + 981331.

It is an arithmetic number, because the mean of its divisors is an integer number (981331).

2^1962661 is an apocalyptic number.

It is an amenable number.

1962661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1962661 is an equidigital number, since it uses as much as digits as its factorization.

1962661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 1962661 is about 1400.9500347978. The cubic root of 1962661 is about 125.2031044765.

The spelling of 1962661 in words is "one million, nine hundred sixty-two thousand, six hundred sixty-one".