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663073 = 3591847
BaseRepresentation
bin10100001111000100001
31020200120021
42201320201
5132204243
622113441
75431105
oct2417041
91220507
10663073
114131a4
1227b881
131a2a68
14133905
15d16ed
hexa1e21

663073 has 4 divisors (see below), whose sum is σ = 665280. Its totient is φ = 660868.

The previous prime is 663071. The next prime is 663097. The reversal of 663073 is 370366.

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: 370366 = 2185183.

It is a cyclic number.

It is not a de Polignac number, because 663073 - 21 = 663071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663071) 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, 565 + ... + 1282.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2663073 is an apocalyptic number.

It is an amenable number.

663073 is a deficient number, since it is larger than the sum of its proper divisors (2207).

663073 is a wasteful number, since it uses less digits than its factorization.

663073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206.

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 663073 is about 814.2929448301. The cubic root of 663073 is about 87.2007957310.

The spelling of 663073 in words is "six hundred sixty-three thousand, seventy-three".

Divisors: 1 359 1847 663073