Search a number
BaseRepresentation
bin1101110101111001110101
320211100120212
431311321311
51412104121
6205435205
742562121
oct15657165
96740525
103628661
1120592a3
12126bb05
139a084a
146a6581
154ba25b
hex375e75

3628661 has 4 divisors (see below), whose sum is σ = 3636300. Its totient is φ = 3621024.

The previous prime is 3628657. The next prime is 3628663. The reversal of 3628661 is 1668263.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1668263 = 2237481.

It can be written as a sum of positive squares in 2 ways, for example, as 2640625 + 988036 = 1625^2 + 994^2 .

It is a cyclic number.

It is not a de Polignac number, because 3628661 - 22 = 3628657 is a prime.

It is a super-3 number, since 3×36286613 (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3628663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (909075).

Almost surely, 23628661 is an apocalyptic number.

It is an amenable number.

3628661 is a deficient number, since it is larger than the sum of its proper divisors (7639).

3628661 is an equidigital number, since it uses as much as digits as its factorization.

3628661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7638.

The product of its digits is 10368, while the sum is 32.

The square root of 3628661 is about 1904.9044595465. The cubic root of 3628661 is about 153.6675376868.

The spelling of 3628661 in words is "three million, six hundred twenty-eight thousand, six hundred sixty-one".

Divisors: 1 509 7129 3628661