688674154 has 16 divisors (see below), whose sum is σ = 1208040768. Its totient is φ = 288281952.

The previous prime is 688674121. The next prime is 688674167. The reversal of 688674154 is 451476886.

It is a junction number, because it is equal to n+sod(n) for n = 688674098 and 688674107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571387 + ... + 572590.

It is an arithmetic number, because the mean of its divisors is an integer number (75502548).

Almost surely, 2^688674154 is an apocalyptic number.

688674154 is a deficient number, since it is larger than the sum of its proper divisors (519366614).

688674154 is a wasteful number, since it uses less digits than its factorization.

688674154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144029.

The product of its digits is 1290240, while the sum is 49.

The square root of 688674154 is about 26242.6018908187. The cubic root of 688674154 is about 883.0892432332.

The spelling of 688674154 in words is "six hundred eighty-eight million, six hundred seventy-four thousand, one hundred fifty-four".