3643266620 has 72 divisors (see below), whose sum is σ = 9000195120. Its totient is φ = 1235055360.

The previous prime is 3643266611. The next prime is 3643266629. The reversal of 3643266620 is 266623463.

It is an interprime number because it is at equal distance from previous prime (3643266611) and next prime (3643266629).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643266629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66335 + ... + 108105.

It is an arithmetic number, because the mean of its divisors is an integer number (125002710).

Almost surely, 2^3643266620 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 3643266620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4500097560).

3643266620 is an abundant number, since it is smaller than the sum of its proper divisors (5356928500).

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

3643266620 is a wasteful number, since it uses less digits than its factorization.

3643266620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41883 (or 41874 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 38.

The square root of 3643266620 is about 60359.4782946307. The cubic root of 3643266620 is about 1538.7343595744.

The spelling of 3643266620 in words is "three billion, six hundred forty-three million, two hundred sixty-six thousand, six hundred twenty".