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488006689 = 2771761757
BaseRepresentation
bin11101000101100…
…110010000100001
31021000021022022211
4131011212100201
51444412203224
6120231402121
715043663012
oct3505462041
91230238284
10488006689
11230515715
12117523341
137a146171
1448b53009
152cc99894
hex1d166421

488006689 has 4 divisors (see below), whose sum is σ = 489768724. Its totient is φ = 486244656.

The previous prime is 488006683. The next prime is 488006707. The reversal of 488006689 is 986600884.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 325189089 + 162817600 = 18033^2 + 12760^2 .

It is a cyclic number.

It is not a de Polignac number, because 488006689 - 215 = 487973921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (488006683) 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, 880602 + ... + 881155.

It is an arithmetic number, because the mean of its divisors is an integer number (122442181).

Almost surely, 2488006689 is an apocalyptic number.

It is an amenable number.

488006689 is a deficient number, since it is larger than the sum of its proper divisors (1762035).

488006689 is a wasteful number, since it uses less digits than its factorization.

488006689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762034.

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 488006689 is about 22090.8734322570. The cubic root of 488006689 is about 787.3030337665.

The spelling of 488006689 in words is "four hundred eighty-eight million, six thousand, six hundred eighty-nine".

Divisors: 1 277 1761757 488006689