687408201 has 40 divisors (see below), whose sum is σ = 1089735680. Its totient is φ = 430611552.

The previous prime is 687408187. The next prime is 687408203. The reversal of 687408201 is 102804786.

It is not a de Polignac number, because 687408201 - 2⁹ = 687407689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (687408203) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 193695 + ... + 197211.

It is an arithmetic number, because the mean of its divisors is an integer number (27243392).

Almost surely, 2^687408201 is an apocalyptic number.

It is an amenable number.

687408201 is a deficient number, since it is larger than the sum of its proper divisors (402327479).

687408201 is a wasteful number, since it uses less digits than its factorization.

687408201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675 (or 3666 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 687408201 is about 26218.4706075698. The cubic root of 687408201 is about 882.5477993621.

The spelling of 687408201 in words is "six hundred eighty-seven million, four hundred eight thousand, two hundred one".