681245080 has 32 divisors (see below), whose sum is σ = 1622967840. Its totient is φ = 256468480.

The previous prime is 681245017. The next prime is 681245083. The reversal of 681245080 is 80542186.

681245080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681245083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500236 + ... + 501595.

It is an arithmetic number, because the mean of its divisors is an integer number (50717745).

Almost surely, 2^681245080 is an apocalyptic number.

It is an amenable number.

681245080 is an abundant number, since it is smaller than the sum of its proper divisors (941722760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

681245080 is a wasteful number, since it uses less digits than its factorization.

681245080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001859 (or 1001855 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 681245080 is about 26100.6720219997. The cubic root of 681245080 is about 879.9023135367.

The spelling of 681245080 in words is "six hundred eighty-one million, two hundred forty-five thousand, eighty".