681165248 has 56 divisors (see below), whose sum is σ = 1437875712. Its totient is φ = 319053824.

The previous prime is 681165241. The next prime is 681165293. The reversal of 681165248 is 842561186.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681165241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252161 + ... + 254847.

It is an arithmetic number, because the mean of its divisors is an integer number (25676352).

Almost surely, 2^681165248 is an apocalyptic number.

681165248 is a gapful number since it is divisible by the number (68) 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 681165248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718937856).

681165248 is an abundant number, since it is smaller than the sum of its proper divisors (756710464).

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

681165248 is a wasteful number, since it uses less digits than its factorization.

681165248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949 (or 2939 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 681165248 is about 26099.1426679115. The cubic root of 681165248 is about 879.8679416160.

The spelling of 681165248 in words is "six hundred eighty-one million, one hundred sixty-five thousand, two hundred forty-eight".