681274288 has 20 divisors (see below), whose sum is σ = 1331653608. Its totient is φ = 337621760.

The previous prime is 681274261. The next prime is 681274331. The reversal of 681274288 is 882472186.

It is a happy number.

681274288 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-4 number, since 4×681274288⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186598 + ... + 190213.

Almost surely, 2^681274288 is an apocalyptic number.

It is an amenable number.

681274288 is a deficient number, since it is larger than the sum of its proper divisors (650379320).

681274288 is a wasteful number, since it uses less digits than its factorization.

681274288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376932 (or 376926 counting only the distinct ones).

The product of its digits is 344064, while the sum is 46.

The square root of 681274288 is about 26101.2315418258. The cubic root of 681274288 is about 879.9148884627.

The spelling of 681274288 in words is "six hundred eighty-one million, two hundred seventy-four thousand, two hundred eighty-eight".