3640524 has 12 divisors (see below), whose sum is σ = 8494584. Its totient is φ = 1213504.

The previous prime is 3640523. The next prime is 3640537. The reversal of 3640524 is 4250463.

3640524 = 632² + 633² + ... + 640².

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 3640494 and 3640503.

It is not an unprimeable number, because it can be changed into a prime (3640523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151677 + ... + 151700.

It is an arithmetic number, because the mean of its divisors is an integer number (707882).

Almost surely, 2^3640524 is an apocalyptic number.

It is an amenable number.

3640524 is an abundant number, since it is smaller than the sum of its proper divisors (4854060).

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

3640524 is a wasteful number, since it uses less digits than its factorization.

3640524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303384 (or 303382 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 3640524 is about 1908.0157232057. The cubic root of 3640524 is about 153.8348147284.

Adding to 3640524 its reverse (4250463), we get a palindrome (7890987).

The spelling of 3640524 in words is "three million, six hundred forty thousand, five hundred twenty-four".