6465749 has 2 divisors, whose sum is σ = 6465750. Its totient is φ = 6465748.

The previous prime is 6465733. The next prime is 6465779. The reversal of 6465749 is 9475646.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6300100 + 165649 = 2510^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 6465749 - 2⁴ = 6465733 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6465779) 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, 3232874 + 3232875.

It is an arithmetic number, because the mean of its divisors is an integer number (3232875).

Almost surely, 2^6465749 is an apocalyptic number.

It is an amenable number.

6465749 is a deficient number, since it is larger than the sum of its proper divisors (1).

6465749 is an equidigital number, since it uses as much as digits as its factorization.

6465749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 6465749 is about 2542.7837108177. The cubic root of 6465749 is about 186.2971797658.

It can be divided in two parts, 646574 and 9, that multiplied together give a triangular number (5819166 = T₃₄₁₁).

The spelling of 6465749 in words is "six million, four hundred sixty-five thousand, seven hundred forty-nine".