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69474681 = 3219938791
BaseRepresentation
bin1000010010000…
…01100101111001
311211201200100100
410021001211321
5120241142211
610521030013
71502345043
oct411014571
9154650310
1069474681
11362423a1
121b325309
13115166a3
149326a93
156175156
hex4241979

69474681 has 12 divisors (see below), whose sum is σ = 100859200. Its totient is φ = 46082520.

The previous prime is 69474673. The next prime is 69474719. The reversal of 69474681 is 18647496.

It is not a de Polignac number, because 69474681 - 23 = 69474673 is a prime.

It is a super-2 number, since 2×694746812 = 9653462600103522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69476681) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 17605 + ... + 21186.

Almost surely, 269474681 is an apocalyptic number.

It is an amenable number.

69474681 is a deficient number, since it is larger than the sum of its proper divisors (31384519).

69474681 is a wasteful number, since it uses less digits than its factorization.

69474681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38996 (or 38993 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 69474681 is about 8335.1473292318. The cubic root of 69474681 is about 411.0949928724.

It can be divided in two parts, 6947 and 4681, that added together give a triangular number (11628 = T152).

The spelling of 69474681 in words is "sixty-nine million, four hundred seventy-four thousand, six hundred eighty-one".

Divisors: 1 3 9 199 597 1791 38791 116373 349119 7719409 23158227 69474681