610639680 has 224 divisors, whose sum is σ = 2242840320. Its totient is φ = 137871360.

The previous prime is 610639663. The next prime is 610639681. The reversal of 610639680 is 86936016.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610639681) 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 31 ways as a sum of consecutive naturals, for example, 597570 + ... + 598590.

It is an arithmetic number, because the mean of its divisors is an integer number (10012680).

Almost surely, 2^610639680 is an apocalyptic number.

610639680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 610639680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1121420160).

610639680 is an abundant number, since it is smaller than the sum of its proper divisors (1632200640).

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

610639680 is a wasteful number, since it uses less digits than its factorization.

610639680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137 (or 1127 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 610639680 is about 24711.1246203001. The cubic root of 610639680 is about 848.3889576771.

The spelling of 610639680 in words is "six hundred ten million, six hundred thirty-nine thousand, six hundred eighty".