687070201 has 2 divisors, whose sum is σ = 687070202. Its totient is φ = 687070200.

The previous prime is 687070187. The next prime is 687070243. The reversal of 687070201 is 102070786.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 641304976 + 45765225 = 25324^2 + 6765^2 .

It is a cyclic number.

It is not a de Polignac number, because 687070201 - 2⁷ = 687070073 is a prime.

It is a super-3 number, since 3×687070201³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (687070261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343535100 + 343535101.

It is an arithmetic number, because the mean of its divisors is an integer number (343535101).

Almost surely, 2^687070201 is an apocalyptic number.

It is an amenable number.

687070201 is a deficient number, since it is larger than the sum of its proper divisors (1).

687070201 is an equidigital number, since it uses as much as digits as its factorization.

687070201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 687070201 is about 26212.0239775566. The cubic root of 687070201 is about 882.4031254693.

The spelling of 687070201 in words is "six hundred eighty-seven million, seventy thousand, two hundred one".