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67670487 = 3255713499
BaseRepresentation
bin1000000100010…
…01000111010111
311201100000110100
410002021013113
5114310423422
610414225143
71451122023
oct402110727
9151300410
1067670487
113521a925
121a7b51b3
1311034411
148db7383
155e1a7ac
hex40891d7

67670487 has 12 divisors (see below), whose sum is σ = 97929000. Its totient is φ = 45029328.

The previous prime is 67670479. The next prime is 67670497. The reversal of 67670487 is 78407676.

It is not a de Polignac number, because 67670487 - 23 = 67670479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67670417) 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 11 ways as a sum of consecutive naturals, for example, 1737 + ... + 11762.

It is an arithmetic number, because the mean of its divisors is an integer number (8160750).

Almost surely, 267670487 is an apocalyptic number.

67670487 is a deficient number, since it is larger than the sum of its proper divisors (30258513).

67670487 is a wasteful number, since it uses less digits than its factorization.

67670487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14062 (or 14059 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 67670487 is about 8226.2073278030. The cubic root of 67670487 is about 407.5051490435.

The spelling of 67670487 in words is "sixty-seven million, six hundred seventy thousand, four hundred eighty-seven".

Divisors: 1 3 9 557 1671 5013 13499 40497 121491 7518943 22556829 67670487