687423034 has 16 divisors (see below), whose sum is σ = 1098862848. Its totient is φ = 321771472.

The previous prime is 687423031. The next prime is 687423043. The reversal of 687423034 is 430324786.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 687422984 and 687423002.

It is not an unprimeable number, because it can be changed into a prime (687423031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156817 + ... + 161140.

It is an arithmetic number, because the mean of its divisors is an integer number (68678928).

Almost surely, 2^687423034 is an apocalyptic number.

687423034 is a deficient number, since it is larger than the sum of its proper divisors (411439814).

687423034 is a wasteful number, since it uses less digits than its factorization.

687423034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318029.

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 687423034 is about 26218.7534791416. The cubic root of 687423034 is about 882.5541472339.

The spelling of 687423034 in words is "six hundred eighty-seven million, four hundred twenty-three thousand, thirty-four".