3697540 has 72 divisors (see below), whose sum is σ = 9882432. Its totient is φ = 1152480.

The previous prime is 3697531. The next prime is 3697559. The reversal of 3697540 is 457963.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 3697496 and 3697505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336135 + ... + 336145.

It is an arithmetic number, because the mean of its divisors is an integer number (137256).

Almost surely, 2^3697540 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 3697540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4941216).

3697540 is an abundant number, since it is smaller than the sum of its proper divisors (6184892).

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

3697540 is an equidigital number, since it uses as much as digits as its factorization.

3697540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 3697540 is about 1922.8988532942. The cubic root of 3697540 is about 154.6337519964.

The spelling of 3697540 in words is "three million, six hundred ninety-seven thousand, five hundred forty".