3651540 has 24 divisors (see below), whose sum is σ = 10224480. Its totient is φ = 973728.

The previous prime is 3651539. The next prime is 3651547. The reversal of 3651540 is 451563.

It is a self number, because there is not a number n which added to its sum of digits gives 3651540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30370 + ... + 30489.

It is an arithmetic number, because the mean of its divisors is an integer number (426020).

Almost surely, 2^3651540 is an apocalyptic number.

3651540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3651540 is an abundant number, since it is smaller than the sum of its proper divisors (6572940).

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

3651540 is a wasteful number, since it uses less digits than its factorization.

3651540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60871 (or 60869 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 3651540 is about 1910.9003113716. The cubic root of 3651540 is about 153.9898233563.

The spelling of 3651540 in words is "three million, six hundred fifty-one thousand, five hundred forty".