3261397 has 2 divisors, whose sum is σ = 3261398. Its totient is φ = 3261396.

The previous prime is 3261373. The next prime is 3261403. The reversal of 3261397 is 7931623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2692881 + 568516 = 1641^2 + 754^2 .

It is a cyclic number.

It is not a de Polignac number, because 3261397 - 2¹⁹ = 2737109 is a prime.

3261397 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3261317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630698 + 1630699.

It is an arithmetic number, because the mean of its divisors is an integer number (1630699).

Almost surely, 2^3261397 is an apocalyptic number.

It is an amenable number.

3261397 is a deficient number, since it is larger than the sum of its proper divisors (1).

3261397 is an equidigital number, since it uses as much as digits as its factorization.

3261397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 31.

The square root of 3261397 is about 1805.9338304600. The cubic root of 3261397 is about 148.2977479198.

The spelling of 3261397 in words is "three million, two hundred sixty-one thousand, three hundred ninety-seven".