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67870469 = 2937431471
BaseRepresentation
bin1000000101110…
…01111100000101
311201201011210002
410002321330011
5114333323334
610422411045
71452614042
oct402717405
9151634702
1067870469
11353470a7
121a890a85
13110a4454
14902a1c9
155e59b7e
hex40b9f05

67870469 has 16 divisors (see below), whose sum is σ = 73835520. Its totient is φ = 62233920.

The previous prime is 67870433. The next prime is 67870519. The reversal of 67870469 is 96407876.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-67870469 is a prime.

It is a super-2 number, since 2×678704692 = 9212801124559922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67870169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45404 + ... + 46874.

It is an arithmetic number, because the mean of its divisors is an integer number (4614720).

Almost surely, 267870469 is an apocalyptic number.

It is an amenable number.

67870469 is a deficient number, since it is larger than the sum of its proper divisors (5965051).

67870469 is a wasteful number, since it uses less digits than its factorization.

67870469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 67870469 is about 8238.3535369636. The cubic root of 67870469 is about 407.9061783660.

The spelling of 67870469 in words is "sixty-seven million, eight hundred seventy thousand, four hundred sixty-nine".

Divisors: 1 29 37 43 1073 1247 1471 1591 42659 46139 54427 63253 1578383 1834337 2340361 67870469