680963550 has 48 divisors (see below), whose sum is σ = 1694235312. Its totient is φ = 181004800.

The previous prime is 680963537. The next prime is 680963551. The reversal of 680963550 is 55369086.

It is a super-2 number, since 2×680963550² = 927422712857205000, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680963551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40390 + ... + 54710.

It is an arithmetic number, because the mean of its divisors is an integer number (35296569).

Almost surely, 2^680963550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680963550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (847117656).

680963550 is an abundant number, since it is smaller than the sum of its proper divisors (1013271762).

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

680963550 is a wasteful number, since it uses less digits than its factorization.

680963550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14653 (or 14648 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 680963550 is about 26095.2783085370. The cubic root of 680963550 is about 879.7810879369.

The spelling of 680963550 in words is "six hundred eighty million, nine hundred sixty-three thousand, five hundred fifty".