680221554 has 16 divisors (see below), whose sum is σ = 1361196480. Its totient is φ = 226614960.

The previous prime is 680221547. The next prime is 680221613. The reversal of 680221554 is 455122086.

680221554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19294 + ... + 41625.

It is an arithmetic number, because the mean of its divisors is an integer number (85074780).

Almost surely, 2^680221554 is an apocalyptic number.

680221554 is an abundant number, since it is smaller than the sum of its proper divisors (680974926).

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

680221554 is a wasteful number, since it uses less digits than its factorization.

680221554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62785.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 680221554 is about 26081.0573788717. The cubic root of 680221554 is about 879.4614275125.

The spelling of 680221554 in words is "six hundred eighty million, two hundred twenty-one thousand, five hundred fifty-four".