3628557 has 10 divisors (see below), whose sum is σ = 5420558. Its totient is φ = 2418984.

The previous prime is 3628483. The next prime is 3628561. The reversal of 3628557 is 7558263.

It can be written as a sum of positive squares in only one way, i.e., 2802276 + 826281 = 1674^2 + 909^2 .

It is not a de Polignac number, because 3628557 - 2¹² = 3624461 is a prime.

It is a Duffinian number.

3628557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3628057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22318 + ... + 22479.

Almost surely, 2^3628557 is an apocalyptic number.

It is an amenable number.

3628557 is a deficient number, since it is larger than the sum of its proper divisors (1792001).

3628557 is an equidigital number, since it uses as much as digits as its factorization.

3628557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44809 (or 44800 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 3628557 is about 1904.8771613939. The cubic root of 3628557 is about 153.6660695992. Note that the first 3 decimals are identical.

The spelling of 3628557 in words is "three million, six hundred twenty-eight thousand, five hundred fifty-seven".