6400516 has 12 divisors (see below), whose sum is σ = 11220300. Its totient is φ = 3194720.

The previous prime is 6400489. The next prime is 6400531. The reversal of 6400516 is 6150046.

It can be written as a sum of positive squares in 2 ways, for example, as 3496900 + 2903616 = 1870^2 + 1704^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2310 + ... + 4258.

It is an arithmetic number, because the mean of its divisors is an integer number (935025).

Almost surely, 2^6400516 is an apocalyptic number.

It is an amenable number.

6400516 is a deficient number, since it is larger than the sum of its proper divisors (4819784).

6400516 is a wasteful number, since it uses less digits than its factorization.

6400516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774 (or 2772 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 6400516 is about 2529.9241095337. The cubic root of 6400516 is about 185.6685429184.

The spelling of 6400516 in words is "six million, four hundred thousand, five hundred sixteen".