3244636620 has 72 divisors (see below), whose sum is σ = 9886321536. Its totient is φ = 861345792.

The previous prime is 3244636613. The next prime is 3244636663. The reversal of 3244636620 is 266364423.

3244636620 is a `hidden beast` number, since 3 + 24 + 4 + 6 + 3 + 6 + 620 = 666.

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 23 ways as a sum of consecutive naturals, for example, 277 + ... + 80556.

Almost surely, 2^3244636620 is an apocalyptic number.

3244636620 is a gapful number since it is divisible by the number (30) 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 3244636620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4943160768).

3244636620 is an abundant number, since it is smaller than the sum of its proper divisors (6641684916).

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

3244636620 is a wasteful number, since it uses less digits than its factorization.

3244636620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81071 (or 81066 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The square root of 3244636620 is about 56961.7118773655. The cubic root of 3244636620 is about 1480.4327654567.

The spelling of 3244636620 in words is "three billion, two hundred forty-four million, six hundred thirty-six thousand, six hundred twenty".