3640572 has 48 divisors (see below), whose sum is σ = 10168480. Its totient is φ = 1119744.

The previous prime is 3640561. The next prime is 3640577. The reversal of 3640572 is 2750463.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

3640572 is a modest number, since divided by 572 gives 364 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108 + ... + 2700.

Almost surely, 2^3640572 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 3640572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5084240).

3640572 is an abundant number, since it is smaller than the sum of its proper divisors (6527908).

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

3640572 is a wasteful number, since it uses less digits than its factorization.

3640572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619 (or 2611 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 3640572 is about 1908.0283016769. The cubic root of 3640572 is about 153.8354908251.

The spelling of 3640572 in words is "three million, six hundred forty thousand, five hundred seventy-two".