688074461 has 16 divisors (see below), whose sum is σ = 716325120. Its totient is φ = 660504000.

The previous prime is 688074451. The next prime is 688074467. The reversal of 688074461 is 164470886.

688074461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-688074461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688074467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 915836 + ... + 916586.

It is an arithmetic number, because the mean of its divisors is an integer number (44770320).

Almost surely, 2^688074461 is an apocalyptic number.

It is an amenable number.

688074461 is a deficient number, since it is larger than the sum of its proper divisors (28250659).

688074461 is a wasteful number, since it uses less digits than its factorization.

688074461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 688074461 is about 26231.1734583110. The cubic root of 688074461 is about 882.8328393263.

The spelling of 688074461 in words is "six hundred eighty-eight million, seventy-four thousand, four hundred sixty-one".