2608381 has 2 divisors, whose sum is σ = 2608382. Its totient is φ = 2608380.

The previous prime is 2608369. The next prime is 2608387. The reversal of 2608381 is 1838062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2452356 + 156025 = 1566^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 2608381 - 2⁵ = 2608349 is a prime.

It is a super-2 number, since 2×2608381² = 13607302882322, which contains 22 as substring.

It is a Chen prime.

2608381 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2608387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1304190 + 1304191.

It is an arithmetic number, because the mean of its divisors is an integer number (1304191).

2^2608381 is an apocalyptic number.

It is an amenable number.

2608381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2608381 is an equidigital number, since it uses as much as digits as its factorization.

2608381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2608381 is about 1615.0482964915. The cubic root of 2608381 is about 137.6544776231.

The spelling of 2608381 in words is "two million, six hundred eight thousand, three hundred eighty-one".