3540638 has 8 divisors (see below), whose sum is σ = 5319000. Its totient is φ = 1767640.

The previous prime is 3540619. The next prime is 3540661. The reversal of 3540638 is 8360453.

3540638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3540638² = 25072234894088, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3540638.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613 + ... + 3111.

It is an arithmetic number, because the mean of its divisors is an integer number (664875).

Almost surely, 2^3540638 is an apocalyptic number.

3540638 is a deficient number, since it is larger than the sum of its proper divisors (1778362).

3540638 is a wasteful number, since it uses less digits than its factorization.

3540638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 3540638 is about 1881.6583111713. The cubic root of 3540638 is about 152.4148122270.

The spelling of 3540638 in words is "three million, five hundred forty thousand, six hundred thirty-eight".