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67804925 = 5217159541
BaseRepresentation
bin1000000101010…
…01111011111101
311201120211212112
410002221323331
5114324224200
610421143405
71452221666
oct402517375
9151524775
1067804925
1135301931
121a85ab65
1311080676
14901036d
155e45535
hex40a9efd

67804925 has 12 divisors (see below), whose sum is σ = 89024436. Its totient is φ = 51052800.

The previous prime is 67804921. The next prime is 67804927. The reversal of 67804925 is 52940876.

It can be written as a sum of positive squares in 6 ways, for example, as 466489 + 67338436 = 683^2 + 8206^2 .

It is not a de Polignac number, because 67804925 - 22 = 67804921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67804921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79346 + ... + 80195.

It is an arithmetic number, because the mean of its divisors is an integer number (7418703).

Almost surely, 267804925 is an apocalyptic number.

It is an amenable number.

67804925 is a deficient number, since it is larger than the sum of its proper divisors (21219511).

67804925 is a wasteful number, since it uses less digits than its factorization.

67804925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159568 (or 159563 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 67804925 is about 8234.3745967742. The cubic root of 67804925 is about 407.7748280944.

The spelling of 67804925 in words is "sixty-seven million, eight hundred four thousand, nine hundred twenty-five".

Divisors: 1 5 17 25 85 425 159541 797705 2712197 3988525 13560985 67804925