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68404001 = 235095843
BaseRepresentation
bin1000001001111…
…00001100100001
311202201021122112
410010330030201
5120002412001
610442045105
71460265401
oct404741441
9152637575
1068404001
1135680a36
121aaa9795
1311230253
149128801
156012cbb
hex413c321

68404001 has 8 divisors (see below), whose sum is σ = 71530560. Its totient is φ = 65290192.

The previous prime is 68403989. The next prime is 68404019. The reversal of 68404001 is 10040486.

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 68404001 - 226 = 1295137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68400001) 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, 8786 + ... + 14628.

It is an arithmetic number, because the mean of its divisors is an integer number (8941320).

Almost surely, 268404001 is an apocalyptic number.

It is an amenable number.

68404001 is a deficient number, since it is larger than the sum of its proper divisors (3126559).

68404001 is a wasteful number, since it uses less digits than its factorization.

68404001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 68404001 is about 8270.6711335901. The cubic root of 68404001 is about 408.9722444166.

Adding to 68404001 its reverse (10040486), we get a palindrome (78444487).

The spelling of 68404001 in words is "sixty-eight million, four hundred four thousand, one".

Divisors: 1 23 509 5843 11707 134389 2974087 68404001