681006652 has 48 divisors (see below), whose sum is σ = 1268467200. Its totient is φ = 319354560.

The previous prime is 681006647. The next prime is 681006709. The reversal of 681006652 is 256600186.

681006652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1551049 + ... + 1551487.

It is an arithmetic number, because the mean of its divisors is an integer number (26426400).

Almost surely, 2^681006652 is an apocalyptic number.

It is an amenable number.

681006652 is a deficient number, since it is larger than the sum of its proper divisors (587460548).

681006652 is a wasteful number, since it uses less digits than its factorization.

681006652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 681006652 is about 26096.1041536855. The cubic root of 681006652 is about 879.7996496375.

The spelling of 681006652 in words is "six hundred eighty-one million, six thousand, six hundred fifty-two".