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69497005 = 513899401
BaseRepresentation
bin1000010010001…
…11000010101101
311211202210222011
410021013002231
5120242401010
610521321221
71502500114
oct411070255
9154683864
1069497005
1136258146
121b336211
13115238b6
149330c7b
15617ba8a
hex42470ad

69497005 has 4 divisors (see below), whose sum is σ = 83396412. Its totient is φ = 55597600.

The previous prime is 69496997. The next prime is 69497033. The reversal of 69497005 is 50079496.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28869129 + 40627876 = 5373^2 + 6374^2 .

It is not a de Polignac number, because 69497005 - 23 = 69496997 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 6949696 + ... + 6949705.

It is an arithmetic number, because the mean of its divisors is an integer number (20849103).

Almost surely, 269497005 is an apocalyptic number.

It is an amenable number.

69497005 is a deficient number, since it is larger than the sum of its proper divisors (13899407).

69497005 is a wasteful number, since it uses less digits than its factorization.

69497005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13899406.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 69497005 is about 8336.4863701682. The cubic root of 69497005 is about 411.1390199515.

The spelling of 69497005 in words is "sixty-nine million, four hundred ninety-seven thousand, five".

Divisors: 1 5 13899401 69497005