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648285357 = 3816126479
BaseRepresentation
bin100110101001000…
…000110010101101
31200011212022022210
4212221000302231
52311430112412
6144155001033
722031222526
oct4651006255
91604768283
10648285357
11302a38425
12161139179
13a4403705
146215584d
153bda983c
hex26a40cad

648285357 has 8 divisors (see below), whose sum is σ = 864519040. Its totient is φ = 432120960.

The previous prime is 648285353. The next prime is 648285371. The reversal of 648285357 is 753582846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 648285357 - 22 = 648285353 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648285353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11244 + ... + 37722.

It is an arithmetic number, because the mean of its divisors is an integer number (108064880).

Almost surely, 2648285357 is an apocalyptic number.

It is an amenable number.

648285357 is a deficient number, since it is larger than the sum of its proper divisors (216233683).

648285357 is a wasteful number, since it uses less digits than its factorization.

648285357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34643.

The product of its digits is 1612800, while the sum is 48.

The square root of 648285357 is about 25461.4484466222. The cubic root of 648285357 is about 865.4767470035.

The spelling of 648285357 in words is "six hundred forty-eight million, two hundred eighty-five thousand, three hundred fifty-seven".

Divisors: 1 3 8161 24483 26479 79437 216095119 648285357