1970261 has 2 divisors, whose sum is σ = 1970262. Its totient is φ = 1970260.

The previous prime is 1970257. The next prime is 1970263. The reversal of 1970261 is 1620791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1874161 + 96100 = 1369^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1970261 - 2² = 1970257 is a prime.

It is a Sophie Germain prime.

Together with 1970263, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1970261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1970263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985130 + 985131.

It is an arithmetic number, because the mean of its divisors is an integer number (985131).

2^1970261 is an apocalyptic number.

It is an amenable number.

1970261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1970261 is an equidigital number, since it uses as much as digits as its factorization.

1970261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1970261 is about 1403.6598590827. The cubic root of 1970261 is about 125.3645040612.

The spelling of 1970261 in words is "one million, nine hundred seventy thousand, two hundred sixty-one".