6454639 has 2 divisors, whose sum is σ = 6454640. Its totient is φ = 6454638.

The previous prime is 6454633. The next prime is 6454649. The reversal of 6454639 is 9364546.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6454639 - 2⁹ = 6454127 is a prime.

It is a d-powerful number, because it can be written as 6 + 4⁵ + 5⁹ + 4¹¹ + 6⁷ + 3⁹ + 9⁴ .

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 6454598 and 6454607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6454633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3227319 + 3227320.

It is an arithmetic number, because the mean of its divisors is an integer number (3227320).

Almost surely, 2^6454639 is an apocalyptic number.

6454639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6454639 is an equidigital number, since it uses as much as digits as its factorization.

6454639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 37.

The square root of 6454639 is about 2540.5981579148. The cubic root of 6454639 is about 186.1904147037.

The spelling of 6454639 in words is "six million, four hundred fifty-four thousand, six hundred thirty-nine".