681140156 has 12 divisors (see below), whose sum is σ = 1262112768. Its totient is φ = 320536512.

The previous prime is 681140143. The next prime is 681140183. The reversal of 681140156 is 651041186.

It is a super-3 number, since 3×681140156³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5008316 + ... + 5008451.

It is an arithmetic number, because the mean of its divisors is an integer number (105176064).

Almost surely, 2^681140156 is an apocalyptic number.

It is an amenable number.

681140156 is a deficient number, since it is larger than the sum of its proper divisors (580972612).

681140156 is a wasteful number, since it uses less digits than its factorization.

681140156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016788 (or 10016786 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 681140156 is about 26098.6619580392. The cubic root of 681140156 is about 879.8571376211.

The spelling of 681140156 in words is "six hundred eighty-one million, one hundred forty thousand, one hundred fifty-six".