681176476532 has 6 divisors (see below), whose sum is σ = 1192058833938. Its totient is φ = 340588238264.

The previous prime is 681176476529. The next prime is 681176476573. The reversal of 681176476532 is 235674671186.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 405379249636 + 275797226896 = 636694^2 + 525164^2 .

It is a super-3 number, since 3×681176476532³ (a number of 36 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 (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85147059563 + ... + 85147059570.

It is an arithmetic number, because the mean of its divisors is an integer number (198676472323).

Almost surely, 2^681176476532 is an apocalyptic number.

It is an amenable number.

681176476532 is a deficient number, since it is larger than the sum of its proper divisors (510882357406).

681176476532 is a wasteful number, since it uses less digits than its factorization.

681176476532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170294119137 (or 170294119135 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 56.

The spelling of 681176476532 in words is "six hundred eighty-one billion, one hundred seventy-six million, four hundred seventy-six thousand, five hundred thirty-two".