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67829897 = 145146747
BaseRepresentation
bin1000000101100…
…00000010001001
311201122010010102
410002300002021
5114331024042
610421455145
71452354542
oct402600211
9151563112
1067829897
1135319673
121a8714b5
131108bb45
1490194c9
155e4cb32
hex40b0089

67829897 has 4 divisors (see below), whose sum is σ = 67878096. Its totient is φ = 67781700.

The previous prime is 67829893. The next prime is 67829899. The reversal of 67829897 is 79892876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67829897 - 22 = 67829893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67829893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21923 + ... + 24824.

It is an arithmetic number, because the mean of its divisors is an integer number (16969524).

Almost surely, 267829897 is an apocalyptic number.

It is an amenable number.

67829897 is a deficient number, since it is larger than the sum of its proper divisors (48199).

67829897 is a wasteful number, since it uses less digits than its factorization.

67829897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48198.

The product of its digits is 3048192, while the sum is 56.

The square root of 67829897 is about 8235.8907836372. The cubic root of 67829897 is about 407.8248819961.

The spelling of 67829897 in words is "sixty-seven million, eight hundred twenty-nine thousand, eight hundred ninety-seven".

Divisors: 1 1451 46747 67829897