3261961 has 2 divisors, whose sum is σ = 3261962. Its totient is φ = 3261960.

The previous prime is 3261931. The next prime is 3261967. The reversal of 3261961 is 1691623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3171961 + 90000 = 1781^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 3261961 - 2¹⁹ = 2737673 is a prime.

3261961 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3261967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630980 + 1630981.

It is an arithmetic number, because the mean of its divisors is an integer number (1630981).

Almost surely, 2^3261961 is an apocalyptic number.

It is an amenable number.

3261961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261961 is an equidigital number, since it uses as much as digits as its factorization.

3261961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 3261961 is about 1806.0899756103. The cubic root of 3261961 is about 148.3062959039.

The spelling of 3261961 in words is "three million, two hundred sixty-one thousand, nine hundred sixty-one".