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620683 = 7253239
BaseRepresentation
bin10010111100010001011
31011112102021
42113202023
5124330213
621145311
75163400
oct2274213
91145367
10620683
11394368
1225b237
1318968b
141222a7
15c3d8d
hex9788b

620683 has 12 divisors (see below), whose sum is σ = 738720. Its totient is φ = 519792.

The previous prime is 620671. The next prime is 620689. The reversal of 620683 is 386026.

620683 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 620683 - 29 = 620171 is a prime.

It is a Duffinian number.

620683 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (620689) 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, 2478 + ... + 2716.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2620683 is an apocalyptic number.

620683 is a deficient number, since it is larger than the sum of its proper divisors (118037).

620683 is a wasteful number, since it uses less digits than its factorization.

620683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 620683 is about 787.8343734568. The cubic root of 620683 is about 85.3014899226.

The spelling of 620683 in words is "six hundred twenty thousand, six hundred eighty-three".

Divisors: 1 7 49 53 239 371 1673 2597 11711 12667 88669 620683