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68002597 = 135230969
BaseRepresentation
bin1000000110110…
…10001100100101
311201221220000201
410003122030211
5114402040342
610425310501
71454004205
oct403321445
9151856021
1068002597
11354273a3
121a935431
131111c630
149062405
155e83db7
hex40da325

68002597 has 4 divisors (see below), whose sum is σ = 73233580. Its totient is φ = 62771616.

The previous prime is 68002591. The next prime is 68002603. The reversal of 68002597 is 79520086.

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

It is an interprime number because it is at equal distance from previous prime (68002591) and next prime (68002603).

It can be written as a sum of positive squares in 2 ways, for example, as 16248961 + 51753636 = 4031^2 + 7194^2 .

It is a cyclic number.

It is not a de Polignac number, because 68002597 - 23 = 68002589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68002591) 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 3 ways as a sum of consecutive naturals, for example, 2615472 + ... + 2615497.

It is an arithmetic number, because the mean of its divisors is an integer number (18308395).

Almost surely, 268002597 is an apocalyptic number.

It is an amenable number.

68002597 is a deficient number, since it is larger than the sum of its proper divisors (5230983).

68002597 is a wasteful number, since it uses less digits than its factorization.

68002597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230982.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 68002597 is about 8246.3687159864. The cubic root of 68002597 is about 408.1707062326.

The spelling of 68002597 in words is "sixty-eight million, two thousand, five hundred ninety-seven".

Divisors: 1 13 5230969 68002597