6499775 has 6 divisors (see below), whose sum is σ = 8059752. Its totient is φ = 5199800.

The previous prime is 6499747. The next prime is 6499793. The reversal of 6499775 is 5779946.

It is not a de Polignac number, because 6499775 - 2¹² = 6495679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129971 + ... + 130020.

It is an arithmetic number, because the mean of its divisors is an integer number (1343292).

Almost surely, 2^6499775 is an apocalyptic number.

6499775 is a deficient number, since it is larger than the sum of its proper divisors (1559977).

6499775 is a wasteful number, since it uses less digits than its factorization.

6499775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260001 (or 259996 counting only the distinct ones).

The product of its digits is 476280, while the sum is 47.

The square root of 6499775 is about 2549.4656302841. The cubic root of 6499775 is about 186.6234044442.

The spelling of 6499775 in words is "six million, four hundred ninety-nine thousand, seven hundred seventy-five".