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680984970 = 23522699499
BaseRepresentation
bin101000100101110…
…000000110001010
31202110101121202120
4220211300012022
52343313004340
6151323512110
722606163631
oct5045600612
91673347676
10680984970
1131a4420a6
12170088636
13ab1123b3
1466628518
153ebb84d0
hex2897018a

680984970 has 16 divisors (see below), whose sum is σ = 1634364000. Its totient is φ = 181595984.

The previous prime is 680984959. The next prime is 680985007. The reversal of 680984970 is 79489086.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11349720 + ... + 11349779.

It is an arithmetic number, because the mean of its divisors is an integer number (102147750).

Almost surely, 2680984970 is an apocalyptic number.

680984970 is an abundant number, since it is smaller than the sum of its proper divisors (953379030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680984970 is a wasteful number, since it uses less digits than its factorization.

680984970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22699509.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 680984970 is about 26095.6887243851. The cubic root of 680984970 is about 879.7903124705.

The spelling of 680984970 in words is "six hundred eighty million, nine hundred eighty-four thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 22699499 45398998 68098497 113497495 136196994 226994990 340492485 680984970