687800723 has 2 divisors, whose sum is σ = 687800724. Its totient is φ = 687800722.

The previous prime is 687800699. The next prime is 687800747. The reversal of 687800723 is 327008786.

687800723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (687800699) and next prime (687800747).

It is a cyclic number.

It is not a de Polignac number, because 687800723 - 2²⁸ = 419365267 is a prime.

It is a super-3 number, since 3×687800723³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (687800753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343900361 + 343900362.

It is an arithmetic number, because the mean of its divisors is an integer number (343900362).

Almost surely, 2^687800723 is an apocalyptic number.

687800723 is a deficient number, since it is larger than the sum of its proper divisors (1).

687800723 is an equidigital number, since it uses as much as digits as its factorization.

687800723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 687800723 is about 26225.9551398991. The cubic root of 687800723 is about 882.7157507630.

The spelling of 687800723 in words is "six hundred eighty-seven million, eight hundred thousand, seven hundred twenty-three".