687276429541 has 4 divisors (see below), whose sum is σ = 740143847212. Its totient is φ = 634409011872.

The previous prime is 687276429529. The next prime is 687276429571. The reversal of 687276429541 is 145924672786.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 363543878916 + 323732550625 = 602946^2 + 568975^2 .

It is a cyclic number.

It is not a de Polignac number, because 687276429541 - 2³⁹ = 137520615653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 687276429541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687276429571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26433708816 + ... + 26433708841.

It is an arithmetic number, because the mean of its divisors is an integer number (185035961803).

Almost surely, 2^687276429541 is an apocalyptic number.

It is an amenable number.

687276429541 is a deficient number, since it is larger than the sum of its proper divisors (52867417671).

687276429541 is a wasteful number, since it uses less digits than its factorization.

687276429541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52867417670.

The product of its digits is 40642560, while the sum is 61.

The spelling of 687276429541 in words is "six hundred eighty-seven billion, two hundred seventy-six million, four hundred twenty-nine thousand, five hundred forty-one".