3636780 has 72 divisors (see below), whose sum is σ = 11855088. Its totient is φ = 830592.

The previous prime is 3636779. The next prime is 3636781. The reversal of 3636780 is 876363.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3636779) and next prime (3636781).

It is not an unprimeable number, because it can be changed into a prime (3636781) 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, 2322 + ... + 3558.

It is an arithmetic number, because the mean of its divisors is an integer number (164654).

Almost surely, 2^3636780 is an apocalyptic number.

3636780 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 3636780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5927544).

3636780 is an abundant number, since it is smaller than the sum of its proper divisors (8218308).

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

3636780 is a wasteful number, since it uses less digits than its factorization.

3636780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263 (or 1254 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 3636780 is about 1907.0343468328. The cubic root of 3636780 is about 153.7820608664.

The spelling of 3636780 in words is "three million, six hundred thirty-six thousand, seven hundred eighty".