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680814748 = 221223139169
BaseRepresentation
bin101000100101000…
…110100010011100
31202110001222021001
4220211012202130
52343242032443
6151320120044
722604554435
oct5045064234
91673058231
10680814748
1131a336219
12170006024
13ab082a83
14665c248c
153eb82d4d
hex2894689c

680814748 has 12 divisors (see below), whose sum is σ = 1192408560. Its totient is φ = 340126592.

The previous prime is 680814737. The next prime is 680814767. The reversal of 680814748 is 847418086.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 680814698 and 680814707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64693 + ... + 74476.

It is an arithmetic number, because the mean of its divisors is an integer number (99367380).

Almost surely, 2680814748 is an apocalyptic number.

It is an amenable number.

680814748 is a deficient number, since it is larger than the sum of its proper divisors (511593812).

680814748 is a wasteful number, since it uses less digits than its factorization.

680814748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140396 (or 140394 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 680814748 is about 26092.4270239470. The cubic root of 680814748 is about 879.7170009423.

The spelling of 680814748 in words is "six hundred eighty million, eight hundred fourteen thousand, seven hundred forty-eight".

Divisors: 1 2 4 1223 2446 4892 139169 278338 556676 170203687 340407374 680814748