687070037 has 2 divisors, whose sum is σ = 687070038. Its totient is φ = 687070036.

The previous prime is 687069989. The next prime is 687070061. The reversal of 687070037 is 730070786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442429156 + 244640881 = 21034^2 + 15641^2 .

It is a cyclic number.

It is not a de Polignac number, because 687070037 - 2¹⁸ = 686807893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687070067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343535018 + 343535019.

It is an arithmetic number, because the mean of its divisors is an integer number (343535019).

Almost surely, 2^687070037 is an apocalyptic number.

It is an amenable number.

687070037 is a deficient number, since it is larger than the sum of its proper divisors (1).

687070037 is an equidigital number, since it uses as much as digits as its factorization.

687070037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 687070037 is about 26212.0208492211. The cubic root of 687070037 is about 882.4030552609.

The spelling of 687070037 in words is "six hundred eighty-seven million, seventy thousand, thirty-seven".