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67970473 = 458314831
BaseRepresentation
bin1000000110100…
…10010110101001
311201220020221221
410003102112221
5114400023343
610424502041
71453511434
oct403222651
9151806857
1067970473
113540524a
121a91a921
131110ab1c
14905481b
155e795ed
hex40d25a9

67970473 has 4 divisors (see below), whose sum is σ = 67989888. Its totient is φ = 67951060.

The previous prime is 67970453. The next prime is 67970479. The reversal of 67970473 is 37407976.

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 a de Polignac number, because none of the positive numbers 2k-67970473 is a prime.

It is a super-3 number, since 3×679704733 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67970479) 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, 2833 + ... + 11998.

It is an arithmetic number, because the mean of its divisors is an integer number (16997472).

Almost surely, 267970473 is an apocalyptic number.

It is an amenable number.

67970473 is a deficient number, since it is larger than the sum of its proper divisors (19415).

67970473 is a wasteful number, since it uses less digits than its factorization.

67970473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19414.

The product of its (nonzero) digits is 222264, while the sum is 43.

The square root of 67970473 is about 8244.4207194927. The cubic root of 67970473 is about 408.1064236827.

The spelling of 67970473 in words is "sixty-seven million, nine hundred seventy thousand, four hundred seventy-three".

Divisors: 1 4583 14831 67970473