681207000 has 384 divisors, whose sum is σ = 2439253440. Its totient is φ = 157593600.

The previous prime is 681206993. The next prime is 681207067. The reversal of 681207000 is 702186.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18410982 + ... + 18411018.

Almost surely, 2^681207000 is an apocalyptic number.

681207000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681207000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1219626720).

681207000 is an abundant number, since it is smaller than the sum of its proper divisors (1758046440).

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

681207000 is a wasteful number, since it uses less digits than its factorization.

681207000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 681207000 is about 26099.9425286724. The cubic root of 681207000 is about 879.8859184069.

Adding to 681207000 its reverse (702186), we get a palindrome (681909186).

The spelling of 681207000 in words is "six hundred eighty-one million, two hundred seven thousand".