610650064 has 60 divisors (see below), whose sum is σ = 1287878508. Its totient is φ = 280268800.

The previous prime is 610650049. The next prime is 610650091. The reversal of 610650064 is 460056016.

It can be written as a sum of positive squares in 6 ways, for example, as 14899600 + 595750464 = 3860^2 + 24408^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187974 + ... + 191194.

Almost surely, 2^610650064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 610650064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (643939254).

610650064 is an abundant number, since it is smaller than the sum of its proper divisors (677228444).

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

610650064 is a wasteful number, since it uses less digits than its factorization.

610650064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304 (or 3281 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 610650064 is about 24711.3347272057. The cubic root of 610650064 is about 848.3937666347.

The spelling of 610650064 in words is "six hundred ten million, six hundred fifty thousand, sixty-four".