3621557 has 8 divisors (see below), whose sum is σ = 3818880. Its totient is φ = 3427600.

The previous prime is 3621529. The next prime is 3621559. The reversal of 3621557 is 7551263.

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

It is a cyclic number.

It is not a de Polignac number, because 3621557 - 2¹⁸ = 3359413 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 (3621559) 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, 1544 + ... + 3102.

It is an arithmetic number, because the mean of its divisors is an integer number (477360).

Almost surely, 2^3621557 is an apocalyptic number.

It is an amenable number.

3621557 is a deficient number, since it is larger than the sum of its proper divisors (197323).

3621557 is a wasteful number, since it uses less digits than its factorization.

3621557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683.

The product of its digits is 6300, while the sum is 29.

The square root of 3621557 is about 1903.0388855722. The cubic root of 3621557 is about 153.5671914564.

The spelling of 3621557 in words is "three million, six hundred twenty-one thousand, five hundred fifty-seven".