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620397 = 32292377
BaseRepresentation
bin10010111011101101101
31011112000200
42113131231
5124323042
621144113
75162511
oct2273555
91145020
10620397
11394128
1225b039
131894cb
14122141
15c3c4c
hex9776d

620397 has 12 divisors (see below), whose sum is σ = 927420. Its totient is φ = 399168.

The previous prime is 620393. The next prime is 620401. The reversal of 620397 is 793026.

620397 is a `hidden beast` number, since 620 + 39 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (620393) and next prime (620401).

It can be written as a sum of positive squares in 2 ways, for example, as 285156 + 335241 = 534^2 + 579^2 .

It is not a de Polignac number, because 620397 - 22 = 620393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 620397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620393) 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 11 ways as a sum of consecutive naturals, for example, 928 + ... + 1449.

It is an arithmetic number, because the mean of its divisors is an integer number (77285).

2620397 is an apocalyptic number.

It is an amenable number.

620397 is a deficient number, since it is larger than the sum of its proper divisors (307023).

620397 is a wasteful number, since it uses less digits than its factorization.

620397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412 (or 2409 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 620397 is about 787.6528423106. The cubic root of 620397 is about 85.2883860922.

The spelling of 620397 in words is "six hundred twenty thousand, three hundred ninety-seven".