6485749 has 4 divisors (see below), whose sum is σ = 6643980. Its totient is φ = 6327520.

The previous prime is 6485741. The next prime is 6485771. The reversal of 6485749 is 9475846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9475846 = 2 ⋅4737923.

It can be written as a sum of positive squares in 2 ways, for example, as 1423249 + 5062500 = 1193^2 + 2250^2 .

It is a cyclic number.

It is not a de Polignac number, because 6485749 - 2³ = 6485741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6485741) 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, 79054 + ... + 79135.

It is an arithmetic number, because the mean of its divisors is an integer number (1660995).

Almost surely, 2^6485749 is an apocalyptic number.

It is an amenable number.

6485749 is a deficient number, since it is larger than the sum of its proper divisors (158231).

6485749 is a wasteful number, since it uses less digits than its factorization.

6485749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158230.

The product of its digits is 241920, while the sum is 43.

The square root of 6485749 is about 2546.7133721721. The cubic root of 6485749 is about 186.4890682569.

The spelling of 6485749 in words is "six million, four hundred eighty-five thousand, seven hundred forty-nine".