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69445313 = 771139729
BaseRepresentation
bin1000010001110…
…10011011000001
311211200012001122
410020322123001
5120234222223
610520242025
71502163320
oct410723301
9154605048
1069445313
1136222323
121b310315
1311506202
14931a0b7
15616b5c8
hex423a6c1

69445313 has 8 divisors (see below), whose sum is σ = 80484480. Its totient is φ = 58685760.

The previous prime is 69445297. The next prime is 69445333. The reversal of 69445313 is 31354496.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69445313 - 24 = 69445297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69445333) 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 7 ways as a sum of consecutive naturals, for example, 69368 + ... + 70361.

It is an arithmetic number, because the mean of its divisors is an integer number (10060560).

Almost surely, 269445313 is an apocalyptic number.

It is an amenable number.

69445313 is a deficient number, since it is larger than the sum of its proper divisors (11039167).

69445313 is a wasteful number, since it uses less digits than its factorization.

69445313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139807.

The product of its digits is 38880, while the sum is 35.

The square root of 69445313 is about 8333.3854465037. The cubic root of 69445313 is about 411.0370593484.

The spelling of 69445313 in words is "sixty-nine million, four hundred forty-five thousand, three hundred thirteen".

Divisors: 1 7 71 497 139729 978103 9920759 69445313