2643461 has 2 divisors, whose sum is σ = 2643462. Its totient is φ = 2643460.

The previous prime is 2643457. The next prime is 2643479. The reversal of 2643461 is 1643462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1366561 + 1276900 = 1169^2 + 1130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2643461 - 2² = 2643457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2643461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2643491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321730 + 1321731.

It is an arithmetic number, because the mean of its divisors is an integer number (1321731).

2^2643461 is an apocalyptic number.

It is an amenable number.

2643461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643461 is an equidigital number, since it uses as much as digits as its factorization.

2643461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 2643461 is about 1625.8723812157. The cubic root of 2643461 is about 138.2688346275.

Subtracting from 2643461 its reverse (1643462), we obtain a palindrome (999999).

The spelling of 2643461 in words is "two million, six hundred forty-three thousand, four hundred sixty-one".