6499270658 has 4 divisors (see below), whose sum is σ = 9748905990. Its totient is φ = 3249635328.

The previous prime is 6499270619. The next prime is 6499270669. The reversal of 6499270658 is 8560729946.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5767946809 + 731323849 = 75947^2 + 27043^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1624817663 + ... + 1624817666.

Almost surely, 2^6499270658 is an apocalyptic number.

6499270658 is a deficient number, since it is larger than the sum of its proper divisors (3249635332).

6499270658 is a wasteful number, since it uses less digits than its factorization.

6499270658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3249635331.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The square root of 6499270658 is about 80618.0541690259. The cubic root of 6499270658 is about 1866.1857738195.

The spelling of 6499270658 in words is "six billion, four hundred ninety-nine million, two hundred seventy thousand, six hundred fifty-eight".