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669124 = 224092
BaseRepresentation
bin10100011010111000100
31020222212101
42203113010
5132402444
622201444
75454541
oct2432704
91228771
10669124
114177a5
12283284
131a5741
14135bc8
15d33d4
hexa35c4

669124 has 9 divisors (see below), whose sum is σ = 1173837. Its totient is φ = 333744.

The previous prime is 669121. The next prime is 669127. The reversal of 669124 is 421966.

The square root of 669124 is 818.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (669121) and next prime (669127).

It can be written as a sum of positive squares in only one way, i.e., 611524 + 57600 = 782^2 + 240^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 669092 and 669101.

It is not an unprimeable number, because it can be changed into a prime (669121) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1432 + ... + 1840.

2669124 is an apocalyptic number.

669124 is the 818-th square number.

It is an amenable number.

669124 is a deficient number, since it is larger than the sum of its proper divisors (504713).

669124 is an equidigital number, since it uses as much as digits as its factorization.

669124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 411 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The cubic root of 669124 is about 87.4652487852.

The spelling of 669124 in words is "six hundred sixty-nine thousand, one hundred twenty-four".

Divisors: 1 2 4 409 818 1636 167281 334562 669124