6499616810 has 8 divisors (see below), whose sum is σ = 11699310276. Its totient is φ = 2599846720.

The previous prime is 6499616807. The next prime is 6499616813. The reversal of 6499616810 is 186169946.

It is an interprime number because it is at equal distance from previous prime (6499616807) and next prime (6499616813).

It can be written as a sum of positive squares in 2 ways, for example, as 6205185529 + 294431281 = 78773^2 + 17159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6499616810² = 84490037353669152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6499616813) 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, 324980831 + ... + 324980850.

Almost surely, 2^6499616810 is an apocalyptic number.

6499616810 is a deficient number, since it is larger than the sum of its proper divisors (5199693466).

6499616810 is a wasteful number, since it uses less digits than its factorization.

6499616810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649961688.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 6499616810 is about 80620.2010044629. The cubic root of 6499616810 is about 1866.2189043302.

The spelling of 6499616810 in words is "six billion, four hundred ninety-nine million, six hundred sixteen thousand, eight hundred ten".