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623858053 = 7213979369
BaseRepresentation
bin100101001011110…
…101000110000101
31121110220021100211
4211023311012011
52234201424203
6141523235421
721313464100
oct4513650605
91543807324
10623858053
112a0173875
12154b18b71
139c3300a0
145cbd7737
1539b81c6d
hex252f5185

623858053 has 12 divisors (see below), whose sum is σ = 781537260. Its totient is φ = 493601472.

The previous prime is 623858047. The next prime is 623858057. The reversal of 623858053 is 350858326.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66048129 + 557809924 = 8127^2 + 23618^2 .

It is not a de Polignac number, because 623858053 - 25 = 623858021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 623857997 and 623858015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623858057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 489048 + ... + 490321.

It is an arithmetic number, because the mean of its divisors is an integer number (65128105).

Almost surely, 2623858053 is an apocalyptic number.

It is an amenable number.

623858053 is a deficient number, since it is larger than the sum of its proper divisors (157679207).

623858053 is a wasteful number, since it uses less digits than its factorization.

623858053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979396 (or 979389 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 623858053 is about 24977.1506181149. The cubic root of 623858053 is about 854.4669353700.

The spelling of 623858053 in words is "six hundred twenty-three million, eight hundred fifty-eight thousand, fifty-three".

Divisors: 1 7 13 49 91 637 979369 6855583 12731797 47989081 89122579 623858053