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561468747 = 3737722611
BaseRepresentation
bin100001011101110…
…101010101001011
31110010111120022210
4201131311111023
52122213444442
6131414120203
716625256060
oct4135652513
91403446283
10561468747
11268a30864
12138050063
138c427738
14547d6c67
153445b19c
hex2177554b

561468747 has 16 divisors (see below), whose sum is σ = 878696192. Its totient is φ = 312167520.

The previous prime is 561468737. The next prime is 561468773. The reversal of 561468747 is 747864165.

It is not a de Polignac number, because 561468747 - 27 = 561468619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561468696 and 561468705.

It is not an unprimeable number, because it can be changed into a prime (561468737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360529 + ... + 362082.

It is an arithmetic number, because the mean of its divisors is an integer number (54918512).

Almost surely, 2561468747 is an apocalyptic number.

561468747 is a deficient number, since it is larger than the sum of its proper divisors (317227445).

561468747 is a wasteful number, since it uses less digits than its factorization.

561468747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722658.

The product of its digits is 1128960, while the sum is 48.

The square root of 561468747 is about 23695.3317554323. The cubic root of 561468747 is about 824.9770410507.

The spelling of 561468747 in words is "five hundred sixty-one million, four hundred sixty-eight thousand, seven hundred forty-seven".

Divisors: 1 3 7 21 37 111 259 777 722611 2167833 5058277 15174831 26736607 80209821 187156249 561468747