731326680 has 96 divisors (see below), whose sum is σ = 2716365600. Its totient is φ = 167159808.

The previous prime is 731326643. The next prime is 731326709. The reversal of 731326680 is 86623137.

It is a happy number.

731326680 is a `hidden beast` number, since 7 + 313 + 266 + 80 = 666.

731326680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142585 + ... + 147624.

It is an arithmetic number, because the mean of its divisors is an integer number (28295475).

Almost surely, 2^731326680 is an apocalyptic number.

731326680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

731326680 is an abundant number, since it is smaller than the sum of its proper divisors (1985038920).

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

731326680 is a wasteful number, since it uses less digits than its factorization.

731326680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290233 (or 290226 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 731326680 is about 27043.0523425149. The cubic root of 731326680 is about 900.9564646496.

The spelling of 731326680 in words is "seven hundred thirty-one million, three hundred twenty-six thousand, six hundred eighty".