2661797 has 2 divisors, whose sum is σ = 2661798. Its totient is φ = 2661796.

The previous prime is 2661781. The next prime is 2661821. The reversal of 2661797 is 7971662.

2661797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2563201 + 98596 = 1601^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 2661797 - 2⁴ = 2661781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2661797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661097) 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, 1330898 + 1330899.

It is an arithmetic number, because the mean of its divisors is an integer number (1330899).

2^2661797 is an apocalyptic number.

It is an amenable number.

2661797 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661797 is an equidigital number, since it uses as much as digits as its factorization.

2661797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 38.

The square root of 2661797 is about 1631.5014557149. The cubic root of 2661797 is about 138.5877924791.

The spelling of 2661797 in words is "two million, six hundred sixty-one thousand, seven hundred ninety-seven".