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67997203 = 476772137
BaseRepresentation
bin1000000110110…
…00111000010011
311201221121121221
410003120320103
5114401402303
610425225511
71453652401
oct403307023
9151847557
1067997203
113542333a
121a932297
131111a041
149060471
155e824bd
hex40d8e13

67997203 has 8 divisors (see below), whose sum is σ = 69579072. Its totient is φ = 66421056.

The previous prime is 67997183. The next prime is 67997213. The reversal of 67997203 is 30279976.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-67997203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67997203.

It is not an unprimeable number, because it can be changed into a prime (67997213) 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, 30751 + ... + 32887.

It is an arithmetic number, because the mean of its divisors is an integer number (8697384).

Almost surely, 267997203 is an apocalyptic number.

67997203 is a deficient number, since it is larger than the sum of its proper divisors (1581869).

67997203 is a wasteful number, since it uses less digits than its factorization.

67997203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 67997203 is about 8246.0416564555. The cubic root of 67997203 is about 408.1599138457.

The spelling of 67997203 in words is "sixty-seven million, nine hundred ninety-seven thousand, two hundred three".

Divisors: 1 47 677 2137 31819 100439 1446749 67997203