6610581968 has 10 divisors (see below), whose sum is σ = 12808002594. Its totient is φ = 3305290976.

The previous prime is 6610581947. The next prime is 6610581983. The reversal of 6610581968 is 8691850166.

It can be written as a sum of positive squares in only one way, i.e., 3486666304 + 3123915664 = 59048^2 + 55892^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206580671 + ... + 206580702.

Almost surely, 2^6610581968 is an apocalyptic number.

It is an amenable number.

6610581968 is a deficient number, since it is larger than the sum of its proper divisors (6197420626).

6610581968 is a wasteful number, since it uses less digits than its factorization.

6610581968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413161381 (or 413161375 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 6610581968 is about 81305.4854729987. The cubic root of 6610581968 is about 1876.7794158754.

The spelling of 6610581968 in words is "six billion, six hundred ten million, five hundred eighty-one thousand, nine hundred sixty-eight".