6649154210 has 16 divisors (see below), whose sum is σ = 12086979192. Its totient is φ = 2633328000.

The previous prime is 6649154207. The next prime is 6649154233. The reversal of 6649154210 is 124519466.

It can be written as a sum of positive squares in 4 ways, for example, as 6394081369 + 255072841 = 79963^2 + 15971^2 .

It is a super-2 number, since 2×6649154210² = 88422503416721448200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3290651 + ... + 3292670.

Almost surely, 2^6649154210 is an apocalyptic number.

6649154210 is a deficient number, since it is larger than the sum of its proper divisors (5437824982).

6649154210 is a wasteful number, since it uses less digits than its factorization.

6649154210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583429.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 6649154210 is about 81542.3461153774. The cubic root of 6649154210 is about 1880.4226273712.

The spelling of 6649154210 in words is "six billion, six hundred forty-nine million, one hundred fifty-four thousand, two hundred ten".