687300473 has 6 divisors (see below), whose sum is σ = 710187642. Its totient is φ = 665128560.

The previous prime is 687300413. The next prime is 687300487. The reversal of 687300473 is 374003786.

It can be written as a sum of positive squares in only one way, i.e., 596727184 + 90573289 = 24428^2 + 9517^2 .

It is not a de Polignac number, because 687300473 - 2⁶ = 687300409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (687300403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 356636 + ... + 358557.

It is an arithmetic number, because the mean of its divisors is an integer number (118364607).

Almost surely, 2^687300473 is an apocalyptic number.

It is an amenable number.

687300473 is a deficient number, since it is larger than the sum of its proper divisors (22887169).

687300473 is an equidigital number, since it uses as much as digits as its factorization.

687300473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715255 (or 715224 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 687300473 is about 26216.4160975523. The cubic root of 687300473 is about 882.5016937749.

The spelling of 687300473 in words is "six hundred eighty-seven million, three hundred thousand, four hundred seventy-three".