610378840 has 64 divisors (see below), whose sum is σ = 1428399360. Its totient is φ = 234485760.

The previous prime is 610378837. The next prime is 610378841. The reversal of 610378840 is 48873016.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 610378840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610378841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168084 + ... + 171676.

It is an arithmetic number, because the mean of its divisors is an integer number (22318740).

Almost surely, 2^610378840 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 610378840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714199680).

610378840 is an abundant number, since it is smaller than the sum of its proper divisors (818020520).

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

610378840 is a wasteful number, since it uses less digits than its factorization.

610378840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3772 (or 3768 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 610378840 is about 24705.8462716823. The cubic root of 610378840 is about 848.2681415889.

The spelling of 610378840 in words is "six hundred ten million, three hundred seventy-eight thousand, eight hundred forty".