3561000 has 64 divisors (see below), whose sum is σ = 11119680. Its totient is φ = 948800.

The previous prime is 3560993. The next prime is 3561023. The reversal of 3561000 is 1653.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2407 + ... + 3593.

It is an arithmetic number, because the mean of its divisors is an integer number (173745).

Almost surely, 2^3561000 is an apocalyptic number.

3561000 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 3561000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5559840).

3561000 is an abundant number, since it is smaller than the sum of its proper divisors (7558680).

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

3561000 is a wasteful number, since it uses less digits than its factorization.

3561000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 3561000 is about 1887.0612072744. The cubic root of 3561000 is about 152.7064301077.

Adding to 3561000 its reverse (1653), we get a palindrome (3562653).

The spelling of 3561000 in words is "three million, five hundred sixty-one thousand".