2667601 has 2 divisors, whose sum is σ = 2667602. Its totient is φ = 2667600.

The previous prime is 2667571. The next prime is 2667611. The reversal of 2667601 is 1067662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1404225 + 1263376 = 1185^2 + 1124^2 .

It is a cyclic number.

It is not a de Polignac number, because 2667601 - 2⁵ = 2667569 is a prime.

It is an Ulam number.

2667601 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2667601.

It is not a weakly prime, because it can be changed into another prime (2667611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333800 + 1333801.

It is an arithmetic number, because the mean of its divisors is an integer number (1333801).

2^2667601 is an apocalyptic number.

It is an amenable number.

2667601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2667601 is an equidigital number, since it uses as much as digits as its factorization.

2667601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2667601 is about 1633.2792167906. The cubic root of 2667601 is about 138.6884487427.

The spelling of 2667601 in words is "two million, six hundred sixty-seven thousand, six hundred one".