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683890 = 2568389
BaseRepresentation
bin10100110111101110010
31021202010021
42212331302
5133341030
622354054
75545564
oct2467562
91252107
10683890
114278a9
1228b92a
131ac38c
1413b334
15d797a
hexa6f72

683890 has 8 divisors (see below), whose sum is σ = 1231020. Its totient is φ = 273552.

The previous prime is 683887. The next prime is 683899. The reversal of 683890 is 98386.

It can be written as a sum of positive squares in 2 ways, for example, as 677329 + 6561 = 823^2 + 81^2 .

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

It is not an unprimeable number, because it can be changed into a prime (683899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34185 + ... + 34204.

2683890 is an apocalyptic number.

683890 is a deficient number, since it is larger than the sum of its proper divisors (547130).

683890 is a wasteful number, since it uses less digits than its factorization.

683890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68396.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 683890 is about 826.9764204619. The cubic root of 683890 is about 88.1039577210.

The spelling of 683890 in words is "six hundred eighty-three thousand, eight hundred ninety".

Divisors: 1 2 5 10 68389 136778 341945 683890