687749301 has 12 divisors (see below), whose sum is σ = 1002208428. Its totient is φ = 454441344.

The previous prime is 687749269. The next prime is 687749311. The reversal of 687749301 is 103947786.

It can be written as a sum of positive squares in 2 ways, for example, as 45887076 + 641862225 = 6774^2 + 25335^2 .

It is not a de Polignac number, because 687749301 - 2⁵ = 687749269 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687749311) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 337110 + ... + 339143.

It is an arithmetic number, because the mean of its divisors is an integer number (83517369).

Almost surely, 2^687749301 is an apocalyptic number.

It is an amenable number.

687749301 is a deficient number, since it is larger than the sum of its proper divisors (314459127).

687749301 is a wasteful number, since it uses less digits than its factorization.

687749301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676372 (or 676369 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 687749301 is about 26224.9747568992. The cubic root of 687749301 is about 882.6937520750.

The spelling of 687749301 in words is "six hundred eighty-seven million, seven hundred forty-nine thousand, three hundred one".