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67716969 = 3191188017
BaseRepresentation
bin1000000100101…
…00011101101001
311201102101012220
410002110131221
5114313420334
610415224253
71451404365
oct402243551
9151371186
1067716969
1135251841
121a818089
131104c618
148dca2a5
155e29449
hex4094769

67716969 has 8 divisors (see below), whose sum is σ = 95041440. Its totient is φ = 42768576.

The previous prime is 67716947. The next prime is 67717003. The reversal of 67716969 is 96961776.

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

It is not a de Polignac number, because 67716969 - 25 = 67716937 is a prime.

It is a super-2 number, since 2×677169692 = 9171175781093922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67716169) 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, 593952 + ... + 594065.

It is an arithmetic number, because the mean of its divisors is an integer number (11880180).

Almost surely, 267716969 is an apocalyptic number.

It is an amenable number.

67716969 is a deficient number, since it is larger than the sum of its proper divisors (27324471).

67716969 is a wasteful number, since it uses less digits than its factorization.

67716969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188039.

The product of its digits is 857304, while the sum is 51.

The square root of 67716969 is about 8229.0320815999. The cubic root of 67716969 is about 407.5984310631.

The spelling of 67716969 in words is "sixty-seven million, seven hundred sixteen thousand, nine hundred sixty-nine".

Divisors: 1 3 19 57 1188017 3564051 22572323 67716969