2601997 has 2 divisors, whose sum is σ = 2601998. Its totient is φ = 2601996.

The previous prime is 2601979. The next prime is 2602007. The reversal of 2601997 is 7991062.

2601997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (2601979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2468041 + 133956 = 1571^2 + 366^2 .

It is a cyclic number.

It is not a de Polignac number, because 2601997 - 2⁷ = 2601869 is a prime.

It is an Ulam number.

2601997 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2601197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1300998 + 1300999.

It is an arithmetic number, because the mean of its divisors is an integer number (1300999).

2^2601997 is an apocalyptic number.

It is an amenable number.

2601997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2601997 is an equidigital number, since it uses as much as digits as its factorization.

2601997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 2601997 is about 1613.0706742111. The cubic root of 2601997 is about 137.5420829866.

The spelling of 2601997 in words is "two million, six hundred one thousand, nine hundred ninety-seven".