688769274 has 16 divisors (see below), whose sum is σ = 1378429920. Its totient is φ = 229441200.

The previous prime is 688769233. The next prime is 688769303. The reversal of 688769274 is 472967886.

688769274 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×688769274² = 948806225612974152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26877 + ... + 45824.

It is an arithmetic number, because the mean of its divisors is an integer number (86151870).

Almost surely, 2^688769274 is an apocalyptic number.

688769274 is an abundant number, since it is smaller than the sum of its proper divisors (689660646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

688769274 is a wasteful number, since it uses less digits than its factorization.

688769274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74285.

The product of its digits is 8128512, while the sum is 57.

The square root of 688769274 is about 26244.4141485384. The cubic root of 688769274 is about 883.1298989295.

The spelling of 688769274 in words is "six hundred eighty-eight million, seven hundred sixty-nine thousand, two hundred seventy-four".