3572621 has 4 divisors (see below), whose sum is σ = 3847452. Its totient is φ = 3297792.

The previous prime is 3572599. The next prime is 3572663. The reversal of 3572621 is 1262753.

3572621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 372100 + 3200521 = 610^2 + 1789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3572621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3572321) by changing a digit.

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, 137396 + ... + 137421.

It is an arithmetic number, because the mean of its divisors is an integer number (961863).

Almost surely, 2^3572621 is an apocalyptic number.

It is an amenable number.

3572621 is a deficient number, since it is larger than the sum of its proper divisors (274831).

3572621 is a wasteful number, since it uses less digits than its factorization.

3572621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274830.

The product of its digits is 2520, while the sum is 26.

The square root of 3572621 is about 1890.1378256625. The cubic root of 3572621 is about 152.8723642554.

The spelling of 3572621 in words is "three million, five hundred seventy-two thousand, six hundred twenty-one".