680549562 has 192 divisors, whose sum is σ = 1983421440. Its totient is φ = 163296000.

The previous prime is 680549561. The next prime is 680549567. The reversal of 680549562 is 265945086.

680549562 is a `hidden beast` number, since 6 + 80 + 5 + 4 + 9 + 562 = 666.

It is not an unprimeable number, because it can be changed into a prime (680549561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1132062 + ... + 1132662.

It is an arithmetic number, because the mean of its divisors is an integer number (10330320).

Almost surely, 2^680549562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680549562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991710720).

680549562 is an abundant number, since it is smaller than the sum of its proper divisors (1302871878).

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

680549562 is a wasteful number, since it uses less digits than its factorization.

680549562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 680549562 is about 26087.3448629791. The cubic root of 680549562 is about 879.6027657902.

The spelling of 680549562 in words is "six hundred eighty million, five hundred forty-nine thousand, five hundred sixty-two".