3571641 has 8 divisors (see below), whose sum is σ = 5291360. Its totient is φ = 2381076.

The previous prime is 3571627. The next prime is 3571651. The reversal of 3571641 is 1461753.

It is not a de Polignac number, because 3571641 - 2⁵ = 3571609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 132283 = 3571641 / (3 + 5 + 7 + 1 + 6 + 4 + 1).

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (3571651) 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, 66115 + ... + 66168.

It is an arithmetic number, because the mean of its divisors is an integer number (661420).

Almost surely, 2^3571641 is an apocalyptic number.

It is an amenable number.

3571641 is a deficient number, since it is larger than the sum of its proper divisors (1719719).

3571641 is a wasteful number, since it uses less digits than its factorization.

3571641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132292 (or 132286 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 3571641 is about 1889.8785675276. The cubic root of 3571641 is about 152.8583849185.

The spelling of 3571641 in words is "three million, five hundred seventy-one thousand, six hundred forty-one".