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3000689 = 19157931
BaseRepresentation
bin1011011100100101110001
312122110011122
423130211301
51232010224
6144152025
734335236
oct13344561
95573148
103000689
11176a50a
121008615
13810a73
1458178d
153e415e
hex2dc971

3000689 has 4 divisors (see below), whose sum is σ = 3158640. Its totient is φ = 2842740.

The previous prime is 3000677. The next prime is 3000709. The reversal of 3000689 is 9860003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9860003 = 28334841.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3000689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3000089) 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, 78947 + ... + 78984.

It is an arithmetic number, because the mean of its divisors is an integer number (789660).

Almost surely, 23000689 is an apocalyptic number.

It is an amenable number.

3000689 is a deficient number, since it is larger than the sum of its proper divisors (157951).

3000689 is a wasteful number, since it uses less digits than its factorization.

3000689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157950.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 3000689 is about 1732.2496933179. The cubic root of 3000689 is about 144.2359974073.

The spelling of 3000689 in words is "three million, six hundred eighty-nine", and thus it is an aban number.

Divisors: 1 19 157931 3000689