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663744 = 2633457
BaseRepresentation
bin10100010000011000000
31020201111010
42202003000
5132214434
622120520
75433054
oct2420300
91221433
10663744
11413754
12280140
131a3163
14133c64
15d19e9
hexa20c0

663744 has 28 divisors (see below), whose sum is σ = 1756664. Its totient is φ = 221184.

The previous prime is 663737. The next prime is 663763. The reversal of 663744 is 447366.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1537 + ... + 1920.

It is an arithmetic number, because the mean of its divisors is an integer number (62738).

2663744 is an apocalyptic number.

663744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

663744 is an abundant number, since it is smaller than the sum of its proper divisors (1092920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663744 is a wasteful number, since it uses less digits than its factorization.

663744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472 (or 3462 counting only the distinct ones).

The product of its digits is 12096, while the sum is 30.

The square root of 663744 is about 814.7048545332. The cubic root of 663744 is about 87.2302002400.

The spelling of 663744 in words is "six hundred sixty-three thousand, seven hundred forty-four".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 192 3457 6914 10371 13828 20742 27656 41484 55312 82968 110624 165936 221248 331872 663744