2643601 has 4 divisors (see below), whose sum is σ = 2649600. Its totient is φ = 2637604.

The previous prime is 2643593. The next prime is 2643607. The reversal of 2643601 is 1063462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1063462 = 2 ⋅531731.

It is a cyclic number.

It is not a de Polignac number, because 2643601 - 2³ = 2643593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2643607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2281 + ... + 3238.

It is an arithmetic number, because the mean of its divisors is an integer number (662400).

2^2643601 is an apocalyptic number.

It is an amenable number.

2643601 is a deficient number, since it is larger than the sum of its proper divisors (5999).

2643601 is an equidigital number, since it uses as much as digits as its factorization.

2643601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2643601 is about 1625.9154344553. The cubic root of 2643601 is about 138.2712755304.

The spelling of 2643601 in words is "two million, six hundred forty-three thousand, six hundred one".