687474803 has 2 divisors, whose sum is σ = 687474804. Its totient is φ = 687474802.

The previous prime is 687474791. The next prime is 687474829. The reversal of 687474803 is 308474786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687474803 - 2⁴ = 687474787 is a prime.

It is a super-3 number, since 3×687474803³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (687474833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343737401 + 343737402.

It is an arithmetic number, because the mean of its divisors is an integer number (343737402).

Almost surely, 2^687474803 is an apocalyptic number.

687474803 is a deficient number, since it is larger than the sum of its proper divisors (1).

687474803 is an equidigital number, since it uses as much as digits as its factorization.

687474803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 47.

The square root of 687474803 is about 26219.7407119140. The cubic root of 687474803 is about 882.5763013741.

The spelling of 687474803 in words is "six hundred eighty-seven million, four hundred seventy-four thousand, eight hundred three".