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69097481 = 315773863
BaseRepresentation
bin1000001111001…
…01100000001001
311211000111220222
410013211200021
5120142104411
610504555425
71466214245
oct407454011
9154014828
1069097481
1136004a62
121b182b75
1311413aab
149269425
1560ed4db
hex41e5809

69097481 has 8 divisors (see below), whose sum is σ = 71468544. Its totient is φ = 66735360.

The previous prime is 69097439. The next prime is 69097487. The reversal of 69097481 is 18479096.

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

It is a cyclic number.

It is not a de Polignac number, because 69097481 - 218 = 68835337 is a prime.

It is a super-2 number, since 2×690974812 = 9548923761090722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69097487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15956 + ... + 19818.

It is an arithmetic number, because the mean of its divisors is an integer number (8933568).

Almost surely, 269097481 is an apocalyptic number.

It is an amenable number.

69097481 is a deficient number, since it is larger than the sum of its proper divisors (2371063).

69097481 is a wasteful number, since it uses less digits than its factorization.

69097481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 69097481 is about 8312.4894586399. The cubic root of 69097481 is about 410.3496541342.

The spelling of 69097481 in words is "sixty-nine million, ninety-seven thousand, four hundred eighty-one".

Divisors: 1 31 577 3863 17887 119753 2228951 69097481