6499964 has 6 divisors (see below), whose sum is σ = 11374944. Its totient is φ = 3249980.

The previous prime is 6499949. The next prime is 6499991. The reversal of 6499964 is 4699946.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812492 + ... + 812499.

It is an arithmetic number, because the mean of its divisors is an integer number (1895824).

Almost surely, 2^6499964 is an apocalyptic number.

It is an amenable number.

6499964 is a deficient number, since it is larger than the sum of its proper divisors (4874980).

6499964 is a wasteful number, since it uses less digits than its factorization.

6499964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624995 (or 1624993 counting only the distinct ones).

The product of its digits is 419904, while the sum is 47.

The square root of 6499964 is about 2549.5026966058. The cubic root of 6499964 is about 186.6252133007.

The spelling of 6499964 in words is "six million, four hundred ninety-nine thousand, nine hundred sixty-four".