610221664 has 48 divisors (see below), whose sum is σ = 1369908288. Its totient is φ = 265070592.

The previous prime is 610221637. The next prime is 610221679. The reversal of 610221664 is 466122016.

610221664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 36072 + ... + 50215.

It is an arithmetic number, because the mean of its divisors is an integer number (28539756).

Almost surely, 2^610221664 is an apocalyptic number.

It is an amenable number.

610221664 is an abundant number, since it is smaller than the sum of its proper divisors (759686624).

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

610221664 is a wasteful number, since it uses less digits than its factorization.

610221664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86327 (or 86319 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 610221664 is about 24702.6651193753. The cubic root of 610221664 is about 848.1953240584.

The spelling of 610221664 in words is "six hundred ten million, two hundred twenty-one thousand, six hundred sixty-four".