3540636 has 36 divisors (see below), whose sum is σ = 9764664. Its totient is φ = 1072800.

The previous prime is 3540619. The next prime is 3540661. The reversal of 3540636 is 6360453.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×3540636² = 25072206568992, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4075 + ... + 4866.

Almost surely, 2^3540636 is an apocalyptic number.

3540636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3540636 is an abundant number, since it is smaller than the sum of its proper divisors (6224028).

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

3540636 is a wasteful number, since it uses less digits than its factorization.

3540636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8962 (or 8957 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 3540636 is about 1881.6577797251. The cubic root of 3540636 is about 152.4147835288.

Adding to 3540636 its product of nonzero digits (6480), we get a triangular number (3547116 = T₂₆₆₃).

The spelling of 3540636 in words is "three million, five hundred forty thousand, six hundred thirty-six".