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61968475 = 528927851
BaseRepresentation
bin1110110001100…
…1000001011011
311022121022202201
43230121001123
5111330442400
610052111031
71351503052
oct354310133
9138538681
1061968475
1131a85918
1218905477
13cab8c4a
148331399
15569106a
hex3b1905b

61968475 has 12 divisors (see below), whose sum is σ = 77707080. Its totient is φ = 49016000.

The previous prime is 61968457. The next prime is 61968479. The reversal of 61968475 is 57486916.

61968475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61968475 - 29 = 61967963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61968479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11701 + ... + 16150.

It is an arithmetic number, because the mean of its divisors is an integer number (6475590).

Almost surely, 261968475 is an apocalyptic number.

61968475 is a deficient number, since it is larger than the sum of its proper divisors (15738605).

61968475 is a wasteful number, since it uses less digits than its factorization.

61968475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27950 (or 27945 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 61968475 is about 7872.0057799776. The cubic root of 61968475 is about 395.7220675882.

The spelling of 61968475 in words is "sixty-one million, nine hundred sixty-eight thousand, four hundred seventy-five".

Divisors: 1 5 25 89 445 2225 27851 139255 696275 2478739 12393695 61968475