544636620 has 144 divisors (see below), whose sum is σ = 1846484640. Its totient is φ = 128793600.

The previous prime is 544636607. The next prime is 544636637. The reversal of 544636620 is 26636445.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77826 + ... + 84534.

It is an arithmetic number, because the mean of its divisors is an integer number (12822810).

Almost surely, 2^544636620 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 544636620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923242320).

544636620 is an abundant number, since it is smaller than the sum of its proper divisors (1301848020).

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

544636620 is a wasteful number, since it uses less digits than its factorization.

544636620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776 (or 6771 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 544636620 is about 23337.4510176240. The cubic root of 544636620 is about 816.6493353719.

The spelling of 544636620 in words is "five hundred forty-four million, six hundred thirty-six thousand, six hundred twenty".