6654672650 has 24 divisors (see below), whose sum is σ = 12456544620. Its totient is φ = 2644911360.

The previous prime is 6654672643. The next prime is 6654672671. The reversal of 6654672650 is 562764566.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1572836281 + 5081836369 = 39659^2 + 71287^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6654672595 and 6654672604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 416015 + ... + 431714.

Almost surely, 2^6654672650 is an apocalyptic number.

6654672650 is a deficient number, since it is larger than the sum of its proper divisors (5801871970).

6654672650 is a wasteful number, since it uses less digits than its factorization.

6654672650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847898 (or 847893 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The square root of 6654672650 is about 81576.1769758794. The cubic root of 6654672650 is about 1880.9427000328.

The spelling of 6654672650 in words is "six billion, six hundred fifty-four million, six hundred seventy-two thousand, six hundred fifty".