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BaseRepresentation
bin10010111011111010010
31011112011102
42113133102
5124323443
621144402
75163014
oct2273722
91145142
10620498
1139420a
1225b102
13189578
141221b4
15c3cb8
hex977d2

620498 has 6 divisors (see below), whose sum is σ = 932421. Its totient is φ = 309692.

The previous prime is 620491. The next prime is 620507. The reversal of 620498 is 894026.

620498 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 2 ways, for example, as 485809 + 134689 = 697^2 + 367^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=557.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620498.

It is not an unprimeable number, because it can be changed into a prime (620491) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 836 + ... + 1392.

2620498 is an apocalyptic number.

620498 is a deficient number, since it is larger than the sum of its proper divisors (311923).

620498 is an frugal number, since it uses more digits than its factorization.

620498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 620498 is about 787.7169542418. The cubic root of 620498 is about 85.2930141286.

The spelling of 620498 in words is "six hundred twenty thousand, four hundred ninety-eight".

Divisors: 1 2 557 1114 310249 620498